# CMS[ Edit ]

*Announcement:*

**Title**: *The Isoperimetric Problem in Spaces with Density*

**Abstract**: Since their appearance in Perelman's 2006 proof of the Poincaré Conjecture, there has been a flood of interest in positive weights or densities on spaces and the corresponding isoperimetric problem. The talk will include recent results and open questions.

*Announcement:*

**Title**: *The Isoperimetric Problem*

**Abstract**: The isoperimetric problem seeks the least-perimeter way to enclose a given volume. Although the answer is well known to be the round sphere in Euclidean and some other spaces, many fascinating open questions remain. Is a geodesic sphere isoperimetric in CP^2? What is the least-perimeter tile of the hyperbolic plane of prescribed area?

*Announcement:*

**Title**: *The Double Bubble Problem*

**Abstract**: A single round soap bubble provides the least-perimeter way to enclose a given volume of air, as was proved by Schwarz in 1884. The Double Bubble Problem seeks the least-perimeter way to enclose and separate two given volumes of air. Three friends and I solved the problem in Euclidean space in 2000. In the latest chapter, Emanuel Milman and Joe Neeman recently solved the problem in Gauss space (Euclidean space with Gaussian density). The history includes results in various spaces and dimensions, some by undergraduates. Many open questions remain.

*Announcement:*

Title: **Brackets and cobrackets in topology of surfaces**

Abstract: We discuss Lie-type algebraic operations - brackets, cobrackets, and double brackets - in the module generated by free homotopy classes of loops in a surface. This subject was initially inspired by the study of the Atiyah-Bott Poisson brackets on the moduli spaces of surfaces. Recently, the algebraic operations on loops were related to the Kashiwara-Vergne equations on automorphisms of free Lie algebras.

Lecture 1: Monday, March 25, 2019 at 15:30

Lecture 2: Wednesday, March 27, 2019 at 15:30

Lecture 3: Thursday, March 28, 2019 at 15:30

**For further details click here**

*Announcement:*

Title: **Brackets and cobrackets in topology of surfaces**

Abstract: We discuss Lie-type algebraic operations - brackets, cobrackets, and double brackets - in the module generated by free homotopy classes of loops in a surface. This subject was initially inspired by the study of the Atiyah-Bott Poisson brackets on the moduli spaces of surfaces. Recently, the algebraic operations on loops were related to the Kashiwara-Vergne equations on automorphisms of free Lie algebras.

Lecture 1: Monday, March 25, 2019 at 15:30

Lecture 2: Wednesday, March 27, 2019 at 15:30

Lecture 3: Thursday, March 28, 2019 at 15:30

**For further details click here**

*Announcement:*

Title: **Brackets and cobrackets in topology of surfaces**

Abstract: We discuss Lie-type algebraic operations - brackets, cobrackets, and double brackets - in the module generated by free homotopy classes of loops in a surface. This subject was initially inspired by the study of the Atiyah-Bott Poisson brackets on the moduli spaces of surfaces. Recently, the algebraic operations on loops were related to the Kashiwara-Vergne equations on automorphisms of free Lie algebras.

Lecture 1: Monday, March 25, 2019 at 15:30

Lecture 2: Wednesday, March 27, 2019 at 15:30

Lecture 3: Thursday, March 28, 2019 at 15:30

*Announcement:*

**Title of talks: Geometric structures in nonholonomic mechanics**

**Lecture 1: **Monday, December 17, 2018 at 15:30

**Lecture 2: **Wednesday, December 19, 2018 at 15:30

**Lecture 2: **Thursday, December 20, 2018 at 15:30

**Abstract**: Nonholonomic mechanics concerns with mechanical systems whose velocity is constrained. If these velocity constraints are linear, they define k-planes at every point of the configuration space of the system. In more complex situations further constraints appear: the movement of the system not only has to be tangent to these k-planes, but must obey conditions in which tangent vectors to the trajectories have constant length, or satisfy other, in general nonlinear, relations. This equips kinematics of nonholonomic mechanical systems with various geometric structures. These are: vector distributions on manifolds, their symmetry groups, differential invariants, associated exterior differential systems, Cartan connections, etc.

In the lectures we will discuss these geometric structures in simple examples of existing (or possible to exist) mechanical systems. We will concentrate on systems whose kinematics is described by a low dimensional parabolic geometry i.e. a geometry modeled on a homogeneous space G/P, with G being a simple Lie group, and P being its parabolic subgroup. The considered systems will include a movement of ice skaters on an ice rink, rolling without slipping or twisting of rigid bodies, movements of snakes and ants, and even movements of flying saucers. Geometric relations between these exemplary nonholonomic systems will be revealed. An appearance of the simple exceptional Lie group G2 will be a repetitive geometric phenomenon in these examples.

*Announcement:*

**Title of talks: Geometric structures in nonholonomic mechanics**

**Lecture 1: **Monday, December 17, 2018 at 15:30

**Lecture 2: **Wednesday, December 19, 2018 at 15:30

**Lecture 2: **Thursday, December 20, 2018 at 15:30

**Abstract**: Nonholonomic mechanics concerns with mechanical systems whose velocity is constrained. If these velocity constraints are linear, they define k-planes at every point of the configuration space of the system. In more complex situations further constraints appear: the movement of the system not only has to be tangent to these k-planes, but must obey conditions in which tangent vectors to the trajectories have constant length, or satisfy other, in general nonlinear, relations. This equips kinematics of nonholonomic mechanical systems with various geometric structures. These are: vector distributions on manifolds, their symmetry groups, differential invariants, associated exterior differential systems, Cartan connections, etc.

In the lectures we will discuss these geometric structures in simple examples of existing (or possible to exist) mechanical systems. We will concentrate on systems whose kinematics is described by a low dimensional parabolic geometry i.e. a geometry modeled on a homogeneous space G/P, with G being a simple Lie group, and P being its parabolic subgroup. The considered systems will include a movement of ice skaters on an ice rink, rolling without slipping or twisting of rigid bodies, movements of snakes and ants, and even movements of flying saucers. Geometric relations between these exemplary nonholonomic systems will be revealed. An appearance of the simple exceptional Lie group G2 will be a repetitive geometric phenomenon in these examples.

*Announcement:*

**Title of talks: Geometric structures in nonholonomic mechanics**

**Lecture 1: **Monday, December 17, 2018 at 15:30

**Lecture 2: **Wednesday, December 19, 2018 at 15:30

**Lecture 2: **Thursday, December 20, 2018 at 15:30

**Abstract**: Nonholonomic mechanics concerns with mechanical systems whose velocity is constrained. If these velocity constraints are linear, they define k-planes at every point of the configuration space of the system. In more complex situations further constraints appear: the movement of the system not only has to be tangent to these k-planes, but must obey conditions in which tangent vectors to the trajectories have constant length, or satisfy other, in general nonlinear, relations. This equips kinematics of nonholonomic mechanical systems with various geometric structures. These are: vector distributions on manifolds, their symmetry groups, differential invariants, associated exterior differential systems, Cartan connections, etc.

In the lectures we will discuss these geometric structures in simple examples of existing (or possible to exist) mechanical systems. We will concentrate on systems whose kinematics is described by a low dimensional parabolic geometry i.e. a geometry modeled on a homogeneous space G/P, with G being a simple Lie group, and P being its parabolic subgroup. The considered systems will include a movement of ice skaters on an ice rink, rolling without slipping or twisting of rigid bodies, movements of snakes and ants, and even movements of flying saucers. Geometric relations between these exemplary nonholonomic systems will be revealed. An appearance of the simple exceptional Lie group G2 will be a repetitive geometric phenomenon in these examples.

*Announcement:*

Title of lectures: **The ****Virtual fibering theorem**.

Lecture 1: Monday, November 2, 2018 at 15:30 (about the statement, history and more)

Lecture 2: Wednesday, November 4, 2018 at 15:30

Lecture 3: Thursday, November 5, 2018 at 15:30

The other two lectures will be about the proof, following Prof. Friedl's paper with Takahiro Kitayama.

**Abstract**: In 2008 Agol showed that a 3-manifold with a certain condition on its fundamental group is virtually fibered, i.e. it has a finite covering that is a surface bundle over the circle. A few years later it was shown by Agol and Wise that the fundamental groups of most 3-manifold satisfy Agol's condition, i.e. most 3-manifodls are virtually fibered. We will outline a proof of Agol's theorem following an approach taken by myself and Kitayama.

Light refreshments will be given before the talks in the Faculty lounge on the 8th floor.

*Announcement:*

Title of lectures: **The ****Virtual fibering theorem**.

Lecture 1: Monday, November 2, 2018 at 15:30 (about the statement, history and more)

Lecture 2: Wednesday, November 4, 2018 at 15:30

Lecture 3: Thursday, November 5, 2018 at 15:30

The other two lectures will be about the proof, following Prof. Friedl's paper with Takahiro Kitayama.

**Abstract**: In 2008 Agol showed that a 3-manifold with a certain condition on its fundamental group is virtually fibered, i.e. it has a finite covering that is a surface bundle over the circle. A few years later it was shown by Agol and Wise that the fundamental groups of most 3-manifold satisfy Agol's condition, i.e. most 3-manifodls are virtually fibered. We will outline a proof of Agol's theorem following an approach taken by myself and Kitayama.

Light refreshments will be given before the talks in the Faculty lounge on the 8th floor.

*Announcement:*

Title of lectures: **The** **Virtual fibering theorem**.

Lecture 1: Monday, November 5, 2018 at 15:30 (about the statement, history and more)

Lecture 2: Wednesday, November 7, 2018 at 15:30

Lecture 3: Thursday, November 8, 2018 at 15:30

The other two lectures will be about the proof, following Prof. Friedl's paper with Takahiro Kitayama.

** Abstract**: In 2008 Agol showed that a 3-manifold with a certain condition on its fundamental group is virtually fibered, i.e. it has a finite covering that is a surface bundle over the circle. A few years later it was shown by Agol and Wise that the fundamental groups of most 3-manifold satisfy Agol's condition, i.e. most 3-manifodls are virtually fibered. We will outline a proof of Agol's theorem following an approach taken by myself and Kitayama.

Light refreshments will be given before the talks in the Faculty lounge on the 8th floor.

*Announcement:*

**SUMMER PROJECTS IN MATHEMATICS AT THE TECHNION**

**Sunday-Friday, September 2-7, 2018**

**PLEASE CLICK HERE FOR FURTHER DETAILS**

**Organizers: Ram Band, Tali Pinsky, Ron Rosenthal**

*Announcement:*

*Announcement:*

**TBA....**

For further information please click the link below:

http://cms-math.net.technion.ac.il/summer-school-the-complex-math-of-the-real-world/

*Announcement:*

Technion–Israel Institute of Technology

Center for Mathematical Sciences

Supported by the Mallat Family Fund for Research in Mathematics

invite you to a workshop on the topic of

**Nonpositively Curved Groups on the Mediterranean**

**Nahsholim, 23-29.5.18**

**Organizers:**

Kim Ruane,Tufts University

Michah Sageev, Technion–Israel Institute of Technology

Daniel Wise, McGill University

**For more information:**

** http://cms-math.net.technion.ac.il/nonpositively-curved-groups-on-the-mediterranean/ **

*Announcement:*

**ACTION NOW MEETING AT THE TECHNION **

Speakers and schedule :

09:30-10:00 Coffee and refreshments at the 8-th floor lounge

10:00-10:50 : Tali Pinsky (Technion Mathematics Department)

10:50-11:10 : Coffee break

11:10:-12:00 : Anish Ghosh (Tata Institute of Fundamental Research)

12:00-14:00 : Lunch

14:00-14:50 : Konstantin Golubev (Bar Ilan and Weizmann Institute)

14:50-15:10 : Coffee break

15:10-16:00 : Sanghoon Kwon (Korea Institute for Advanced Study)

**TITLES AND ABSTRACTS:**

1) Tali Pinsky :

Title: An upper bound for volumes of geodesics

Abstract: Consider a closed geodesic gamma on a hyperbolic surface S, embedded in the unit tangent bundle of S. If gamma is filling its complement is a hyperbolic three manifold, and thus has a well defined volume. I will discuss how to use Ghys' template for the geodesic flow on the modular surface to obtain an upper bound for this volume in terms of the length of gamma. This is joint work with Maxime Bergeron and Lior Silberman.

2) Anish Ghosh :

Title: The metric theory of dense lattice orbits

Abstract: The classical theory of metric Diophantine approximation is very well developed and has, in recent years, seen significant advances, partly due to connections with homogeneous dynamics. Several problems in this subject can be viewed as particular examples of a very general setup, that of lattice actions on homogeneous varieties of semisimple groups. The latter setup presents significant challenges, including but not limited to, the non-abelian nature of the objects under study. In joint work with Alexander Gorodnik and Amos Nevo, we develop the first systematic metric theory for dense lattice orbits, including analogues of Khintchine's theorems.

3) Konstantin Golubev :

Title: Density theorems and almost diameter of quotient spaces

Abstract: We examine the typical distance between points in various quotient spaces. This question has an interesting approach inspired by the work of Lubetzky and Peres. They showed that the random walk on a graph expresses under the assumption of the graph being Ramanujan. We show that this condition can be relaxed to some density condition on the eigenvalues, and apply it to various settings. Joint work with Amitay Kamber.

4) Sanghoon Kwon :

Title: A combinatorial approach to the Littlewood conjecture in positive characteristic

Abstract: The Littlewood conjecture is an open problem in simultaneous Diophantine approximation of two real numbers. Similar problem in a field K of formal series over finite fields is also still open. This positive characteristic version of problem is equivalent to whether there is a certain bounded orbit of diagonal semigroup action on Bruhat-Tits building of PGL(3,K). We describe geometric properties of buildings associated to PGL(3,K), explore the combinatorics of the diagonal action on it and discuss how it helps to investigate the conjecture.

*Announcement:*

Title of lectures: *Billiard paths on polygons: Where do they lead?*

LECTURE 1: Monday, April 30, 2018 at 15:30

LECTURE 2: Tuesday, May 1, 2018 at 15:30

LECTURE 3: Thursday, May 3, 2018 at 15:30

Light refreshments will be given before the talks in the lounge of the Faculty of Mathematics on the 8th floor.

*Announcement:*

Title of lectures: *Billiard paths on polygons: Where do they lead?*

LECTURE 1: Monday, April 30, 2018 at 15:30

LECTURE 2: Tuesday, May 1, 2018 at 15:30

LECTURE 3: Thursday, May 3, 2018 at 15:30

Light refreshments will be given before the talks in the lounge of the Faculty of Mathematics on the 8th floor.

*Announcement:*

Title of lectures: *Billiard paths on polygons: Where do they lead?*

LECTURE 1: Monday, April 30, 2018 at 15:30

LECTURE 2: Tuesday, May 1, 2018 at 15:30

LECTURE 3: Thursday, May 3, 2018 at 15:30

Light refreshments will be given before the talks in the lounge of the Faculty of Mathematics on the 8th floor.

*Announcement:*

Lecture 1: April 23, 2018 at 15:30

Lecture 2: April 25, 2018 at 15:30

Lecture 3: April 26, 2018 at 15:30

*Announcement:*

Lecture 1: April 23, 2018 at 15:30

Lecture 2: April 25, 2018 at 15:30

Lecture 3: April 26, 2018 at 15:30

*Announcement:*

Lecture 1: April 23, 2018 at 15:30

Lecture 2: April 25, 2018 at 15:30

Lecture 3: April 26, 2018 at 15:30

*Announcement:*

Technion – Israel Institute of Technology

supported by the Mallat Family Fund for Research in Mathematics

and

THE ISRAEL ACADEMY OF SCIENCES AND HUMANITIESThe Batsheva de Rothschild Fund forThe Advancement of Science in IsraelThe American Foundation for Basic Research in IsraelInvites you to

#### The Batsheva de Rothschild Seminar on the Hardy-type inequalities and elliptic PDEs

7-11.01.2018

dedicated to Professor Moshe Marcus 80th birthday!

**Organizing committee:**

Prof. Dan Mangoubi, Einstein Institute of Mathematics

Prof. Yehuda Pinchover, Technion – Israel Institute of Technology

Prof. Mikhail Sodin, Tel Aviv University

For More information:

*Announcement:*

**Technion – **Israel Institute of Technology

**Center for Mathematical Sciences**

**Supported by the Mallat Family Fund for Research in Mathematics**

**and The Hebrew University of Jerusalem**

invite you to an ongoing lecture series:

**MATHEMATICAL PHYSICS ON FRIDAYS**

**On the 17th of November, 2017**

**Schedule:**

09:30 - Coffee & light refreshments

10:00 - Jonathan Robbins (Bristol)

11:00 - More coffee

11:20 - Jozef Dodziuk (CUNY)

12:20 - Light lunch

**Talk titles:**

**Jonathan Robbins** -** **Collective coordinates, asymptotics and domain wall dynamics in ferromagnets.

**Jozef Dodziuk** -* Surjectivity of the Laplacian on infinate graphs*

**THE LECTURES WILL TAKE PLACE AT THE HEBREW UNIVERSITY OF JERUSALEM, HALL 2 OF THE MATHEMATICS BUILDING (MANCHESTER BUILDING)**

Coffee & light refreshments will be given in the teachers' lounge on the ground floor of the Mathematics building.

**Organizing committee: Ram Band (Technion), Jonathan Breuer (The Hebrew University of Jerusalem), Ron Rosethal (Technion)**

**For further information and car permit ****please contact:**

Jonathan Breuer: phone: +972-(0)2-6584481 E-mail: jbreuer@math.huji.ac.il

*Announcement:*

**Technion**–Israel Institute of Technology

**Center for Mathematical Sciences**

Supported by the Mallat Family Fund for Research in Mathematics

Invite you to a

**Special lecture Series by Professor Paul Biran (ETH Zurich)**

For more information: http://cms-math.net.technion.ac.il/special-lecture-series-professor-paul-biran/ ** **

*Announcement:*

**Technion**–Israel Institute of Technology

**Center for Mathematical Sciences**

Supported by the Mallat Family Fund for Research in Mathematics

invites you to a

**Special lecture Series by Professor Paul Biran (ETH Zurich)**

For more information: http://cms-math.net.technion.ac.il/special-lecture-series-professor-paul-biran/ ** **

*Announcement:*

Technion–Israel Institute of Technology

Center for Mathematical Sciences

Supported by the Mallat Family Fund for Research in Mathematics

Invite you to a

**Special lecture Series by Professor Paul Biran (ETH Zurich)**

For more information: http://cms-math.net.technion.ac.il/special-lecture-series-professor-paul-biran/ ** **

*Announcement:*

Technion-Israel Institute of Technology

Center for Mathematical Sciences

Supported by the Mallat Family Fund for Research in Mathematics

Invites you to a

**Special Lecture Series by Professor Andrzej Zuk (Université Paris 7)**

For more information:

http://cms-math.net.technion.ac.il/special-lecture-series-prof-andrzej-zuk

*Abstract:*

**German–Israeli Research Workshop on Optimization **

** October 16-19, 2017**

The growing importance of optimization has been realized in recent years. This is due not only to theoretical developments in thisarea, but also because of numerous applications to engineering andeconomics.The topics which will be discussed cover many important areas of optimization including numerical optimization, stochastic optimization, optimal control with PDE and variational analysis.

**Organizers:**

- Diethard Pallaschke (Karlsruhe)
- Simeon Reich (Technion)
- Itai Shafrir (Technion)
- Vladimir Shikhman (Chemnitz)
- Oliver Stein (Karlsruhe)
- Gershon Wolansky (Technion)
- Alexander Zaslavski (Technion)

** For more Information**:** http://cms-math.net.technion.ac.il/german-israeli-research-workshop-on-optimization/**

*Announcement:*

**SUMMER PROJECTS IN MATHEMATICS AT THE TECHNION**

**Sunday-Friday, September 10–15, 2017**

**PLEASE CLICK HERE FOR FURTHER INFORMATION**

**Organizers**: Ram Band, Baptiste Devyver, Ron Rosenthal

*Announcement:*

**Summer School 2017**

#### (for undergraduate students in their last years of studies)

**Sunday – Friday 3-8.9.2017, Technion, Haifa, Israel**

**PLEASE CLICK HERE FOR FURTHER DETAILS**

**Organizers**: Michael Entov, Michael Khanevsky, Amos Nevo

*Announcement:*

*Announcement:*

*Announcement:*

Dear all,

Our next “Math. Phys. on Fridays” meeting will take place on June 9^{th} at the Technion.

Attached you’ll find the poster of this event.

*Announcement:*

We are pleased to invite you to our annual Elisha Netanyahu Memorial Lecture on the 7th of June at 17:00 in Sego 1 auditorium at Sego building. The lecturer this year is Professor Gil Kalai from the Hebrew University of Jerusalem. The title of his talk is *"Puzzles** about trees, high dimensions, elections, errors and computation". *

* *Light refreshments will be given before the talk in Faculty Lounge on the 8th floor.

Attached is the poster of the talk.

*Announcement:*

**Conference**

**COMPLEX AND HARMONIC ANALYSIS III**

**In memory of Professor Uri Srebro (Z"L)**

** June 4 – 8, 2017 **

** **

The Conference will provide a forum for discussions and exchange of new ideas, concepts and recent developments in the broad field of Modern Analysis. The topics to be addressed include (but not restricted to(

**Complex Analysis **

** Harmonic Analysis and PDE **

** Quasi-Conformal Mappings and Geometry**

** **

** **

The event will take place on June 4 – 8, 2017:

In the Technion on June 7 and in HIT on June 4, 5, 8.

Invited talks in room 232

Morning talks: split talks in 232 and in 619,

Afternoon talks: split talks in 232 and in 300.

For registration and information please contact Anatoly Golberg at golberga@hit.co.il

On behalf of the Organizing Committee,

Anatoly Golberg

Holon Institute of Technology

Daoud Bshouty

Technion

*Announcement:*

We cordially invite you to attend the Distinguished Lecture that will be given by the 2017 Wolf Prize Laureate Professor Charles Fefferman (Princeton University). The title of the lecture is:"A Sharp Finiteness Theorem for Lipschitz Selection". It will be held at Auditorium 232 on June 8, at 12:30. Light refreshments will be given before the talk in Faculty Lounge on the 8th floor. Poster of the talk is attached.

*Abstract:*

אופניים הם עצם מרתק מהרבה בחינות, תיאורטיות ומעשיות. בהרצאה זו אתרכז, ברובה, בגיאומטריה של מסילות אופניים. העקבות שמותירים אחריהם הגלגל האחורי והקדמי של אופניים בעוברם על פני אדמה בוצית או חולית נראים, במבט ראשון, כמו זוג מסילות אקראיות. לא כך הדבר. ניתן למשל להבחין ברוב המקרים בין המסילה הקדמית לאחורית ולקבוע אפילו את הכיוון שבו נסעו האופניים בהתבסס על צורת המסילה בלבד.

עוד דוגמא: אם הגלגל הקדמי יוצר מסילה סגורה, הגלגל האחורי יוצר לרוב מסילה לא סגורה, שהמרחק בין קצותיה תלוי בשטח הנתחם ע"י המסלול הקדמי ואורך האופניים (עובדה זו שימשה בעבר לבניית מכשיר למדידת שטחים). לאחרונה, הנושא מושך תשומת לב מיוחדת בעקבות חשיפת קשרים בלתי צפויים עם תורת המערכות האינטגרביליות.

*Announcement:*

**Workshop on Optimization ****on the Occasion ****of**** ****Professor Roman Polyak's 80 ^{th} Birthday**

**April 3, 2017**

**Auditorium 232, Amado Mathematics Building, Technion**

** **

**For further information, titles and abstracts and more, please see:**

http://www.math.tau.ac.il/~teboulle/roman80.html

**There is no registration fee, but if you wish to participate in the workshop, please let us know by March 20th at: cms@math.technion.ac.il **

**Schedule****:**

**10:00-10:15 - Opening remarks**

**10:15-11:00 - Amir Beck **(Technion)

**11:00-11:15 - Coffee break**

**11:15-12:00 - Dmitriy Drusvyatskiy **(University of Washington)

**12:00-12:45 - Dan Garber **(TTI, Chicago)

**12:45-14:15 - Lunch break**

**14:15-15:00 - Michael Zibulevsky **(Technion)

**15:00-15:30 - Coffee break**

**15:30-16:30 - Aharon Ben-Tal **(Technion)

**16:30-17:15 - Boris Polyak** (Russian Academy of Sciences)

**Organizers: **Simeon Reich (Technion), Shoham Sabach (Technion), Marc Teboulle (TAU)

*Announcement:*

**Workshop on Nonlinear Analysis and Optimization**

**February 7, 2017**

**Room 814, Amado Mathematics Building**

**Schedule:**

**10:30-11:15** **Christian Bargetz** (University of Innsbruck)

Linear convergence of dynamic string averaging projection methods in the presence of perturbations

**11:15-11:30** Coffee Break

**11:30-12:15 Andrzej Cegielski** (University of Zielona Gora)

Properties of some classes of regular quasi-nonexpansive operators

**12:15-12:30** Coffee Break

**12:30-13:15** **Yair Censor** (University of Haifa)

Linear and Nonlinear Superiorization: A Methodology between Feasibility-Seeking and Optimization

**13:15-15:30** Lunch Break

**15:30-16:15** **Daniel Reem** (Technion)

**16:15-16:30** Coffee Break

**16:30-17:15** **Rafal Zalas **(Technion)

Outer approximation methods for solving variational inequalities in Hilbert space.

**Organizers: Simeon Reich and Alexander Zaslavski**

*Announcement:*

*Announcement:*

*Announcement:*

**Technion – **Israel Institute of Technology

**Center for Mathematical Sciences**

**Supported by the Mallat Family Fund for Research in Mathematics**

Invites you to an ongoing lecture series:

**MATHEMATICAL PHYSICS ON HANUKKAH**

**On the 25th of December, 2016**

**Schedule:**

10:40 - Coffee & light refreshments

11:00 - Percy Deift (Courant)

12:00 - Lunch

13:30 - Israel Michael Sigal (Toronto)

14:30 - Break

14:45 - Israel Klich (Virginia)

15:45 - Coffee and light refreshments

16:05 - Igor Wigman (King's College)

** Please let us know by Wednesday at 14:00, whether you intend to participate in this event.**

**Talk titles:**

Percy Deift -** ****Asymptotics of Toeplitz, Hankel and Toeplitz+Hankel determinants with Fisher-Hartwig singularities.**

Israel Michael Sigal - **On the Bogolubov-de Gennes Equations.**

Israel Klich** - Colored Motzkin walks, Dyck walks, and the extensively entangled spin chain.**

Igor Wigman** - Nodal intersections of random toral eigenfunctions with a test curve.**

**The lectures will take place at room 814 (8 ^{th} floor),**

**Amado Mathematics Building, Technion**

Coffee & light refreshments will be given in the Department of Mathematics' lounge on the 8th floor.

**Organizing committee: Ram Band (Technion), Jonathan Breuer (The Hebrew University of Jerusalem)**

**For administrative information and car permit to enter the Technion ****please contact:**

Yael Stern, Workshop Coordinator, Phone: +972-(0)4-8294276\8 Fax: +972-(0)4-8293388 E-mail: cms@math.technion.ac.il

*Announcement:*

*Abstract:*

*Announcement:*

*Announcement:*

*Announcement:*

**SUMMER PROJECTS IN MATHEMATICS AT THE TECHNION**

**Sunday-Thursday, September 25-30**

**For further information in English, please see the link below**:

http://cms-math.net.technion.ac.il/summer-projects/

**For further information in Hebrew, please see the link below:**

*Abstract:*

It is now twenty years since Paul Erdős passed away. A Hungarian – Israeli meeting in combinatorics will be held in his memory at the Technion, **August 23-25, 2016 **

Confirmed participants so far:

Hungary: Zoltán Füredi, Dániel Gerbner, Ervin Gyõri, Gyula O.H. Katona, Balázs Keszegh, Dezsõ Miklós, Dániel Nagy, Balázs Patkós, Miklós Ruszinkó, Miklós Simonovits, Daniel Soltész, Zsolt Tuza.

Israel: Ron Adin, Ron Aharoni, Noga Alon, Eli Berger, Maria Chudnovsky, Aviezri S. Fraenkel, Roman Glebov, Ron Holzman, Zilin Jiang, Gil Kalai, Dani Kotlar, Michael Krivelevich, Seva Lev, Nati Linial, Roy Meshulam, Rom Pinchasi, Amir Yehudayoff, Ran Ziv

Other Israeli mathematicians are welcome to participate.

For further information please contact:

Ron Aharoni: ra@tx.technion.ac.il 04-8294178 OR Ron Holzman: holzman@tx.technion.ac.il 04-8294030

**POSTER ABSTRACTS SCHEDULE List of Participants**

*Announcement:*

*Announcement:*

**Technion – **Israel Institute of Technology

**Center for Mathematical Sciences**

**Supported by the Mallat Family Fund for Research in Mathematics**

Invites you to an ongoing lecture series:

# MATHEMATICAL PHYSICS ON FRIDAYS

**On the 10th of June, 2016**

**Schedule:**

9:30 - Coffee & light refreshments

10:01 - Yosi Avron (Technion)

11:01 - More coffee & light refreshments

11:21 - Alexander Logunov (TAU)

12:21 - Lunch

** **

**Talk titles:**

Yosi Avron - **The mathematical physics of Sagnac interferometers**

Alexander Logunov - **Zeros of Laplace eigenfunctions and harmonic functions. **

**The lectures will take place at room 814 (8 ^{th} floor),**

**Amado Mathematics Building, Technion**

Coffee & light refreshments will be given in the Department of Mathematics' lounge on the 8th floor.

**Organizing committee: Ram Band (Technion), Nick Crawford (Technion), Sasha Sodin (TAU).**

**For administrative information and car permit to enter the Technion ****please contact:**

Yael Stern, Workshop Coordinator, Phone: +972-(0)4-8294276\8 Fax: +972-(0)4-8293388 E-mail: cms@math.technion.ac.il

*Abstract:*

Center for Mathematical Sciences invites you to:

**Whitney Extension Problems:**

**C^m and Sobolev functions on subsets of R^n**

**(The 9th Whitney Problems Workshop)**

**Sunday 29.5.2016 - Thursday 2.6.2016**

**Technion, Haifa, Israel**

The conference will focus on some of the most vibrant developments in function theory related to the celebrated Whitney extension and trace problems for classes of smooth functions. These include new analytic and geometric methods in the study of differentiable structures on finite sets, extension and trace problems for functions in Sobolev spaces and spaces of generalized smoothness defined on closed subsets of R^n, geometric description of Sobolev extension domains, etc.

The purpose of the conference is to bring together an international group of experts in the areas of function theory and functional and geometric analysis to report on and discuss recent progress and open problems in the area of Whitney type problems and thus foster interaction and collaboration between researchers in these fields.

Registration is now open (click here to register)

**Scientific Committee: **

- Alexander Brudnyi (University of Calgary, Canada)
- Michael Cwikel (Technion, Haifa, Israel)
- Charles Fefferman (Princeton University, USA)
- Andreea Nicoara (Trinity College, Dublin, Ireland)
- Pavel Shvartsman (Technion, Haifa, Israel)
- Nahum Zobin (College of William and Mary, USA)

**Organizing Committee: **

- Michael Cwikel (Technion, Haifa, Israel)
- Pavel Shvartsman (Technion, Haifa, Israel)

**Poster Titles&Abstracts Schedule List of Participants **

**Objectives Transport from the airport**

** Shuttle from hotel Excursion Info**

**Talks:**

**Matthias Aschenbrenner**(University of California, Los Angeles, USA)

Title: Definable Extension Theorems in o-minimal Structures

- Daniel Azagra (ICMAT and Universidad Complutense de Madrid, Spain)

Title: Whitney Extension Theorems for convex functions of the classes C^1 and C^{1,w}

- Alexander Brudnyi (University of Calgary, Canada)

Title: On Banach spaces predual to trace spaces of C^k functions

- Charles Fefferman (Princeton University, USA)

Title: Finiteness Principle for C^m and Lipschitz Selection 1,2,3

- Alexander Goncharov (Bilkent University, Turkey)

Title: Mityagin Extension Problem

- Vladimir Gol'dshtein (Ben-Gurion University, Israel)

Title: Sobolev Spaces: Composition Operators and their Applications

- Ritva Hurri-Syrjanen (University of Helsinki, Finland)

Title: On Pointwise Estimates

- Lizaveta Ihnatsyeva (Kansas State University, USA)

Title: Fractional Hardy Inequalities

- Arie Israel (University of Texas, Austin, USA)

Title: A Finiteness Principle for the Smooth Selection Problem

- Kevin Garving Luli (University of California, Davis, USA)

Title: Constructing Nonnegative Interpolants

- Pavel Shvartsman (Technion, Haifa, Israel)

Title: On the boundary values of C^2-functions

- Alexander Tyulenev (Steklov Institute of Mathematics of Russian Academy of Sciences, Moscow, Russia)

Title: Traces of weighted Sobolev spaces. The case p = 1

- Yi Zhang (University of Jyvaskyla, Finland)

Title: A geometric characterization for planar Sobolev extension domains

- Yuan Zhou (Beihang University, Beijing, China)

Title: Extension and Restriction of the Q-spaces

For information: Yael Stern- Conference Coordinator, Tel: +972-4-8294278 E-mail: cms@math.technion.ac.il

*Announcement:*

**Technion – Israel Institute of Technology**

**Center for Mathematical Sciences**

**Supported by the Mallat Family Fund for Research in Mathematics**

Invites you to an ongoing lecture series:

**MATHEMATICAL PHYSICS ON FRIDAYS**

**On the 11th of March, 2016**

**Schedule:**

9:30 - Coffee & light refreshments

10:01 - Ehud Altman (Weizmann Institute of Science)

11:01 - More coffee & light refreshments

11:21 - Evgeny Strahov (The Hebrew University of Jerusalem)

12:21 - Lunch

**Talk titles:**

Ehud Altman - To be announced...

Evgeny Strahov - To be announced....

**The lectures will take place at room 814 (8th floor),**

**Amado Mathematics Building, Technion**

Coffee & light refreshments will be given in the Department of Mathematics' lounge on the 8th floor.

**Organizing committee: Rami Band (Technion), Nick Crawford (Technion), Sasha Sodin (TAU).**

**For administrative information and car permit to enter the Technion please contact: **

Yael Stern, Workshop Coordinator, Phone: +972-(0)4-8294276\8 Fax: +972-(0)4-8293388 E-mail: cms@math.technion.ac.il

*Announcement:*

**Technion – Israel Institute of Technology**

**Center for Mathematical Sciences**

**Supported by the Mallat Family Fund for Research in Mathematics**

**Invites you to a**

**ALGEBRA AND NUMBER THEORY DAY**

**On the 31st of December, 2015**

**Schedule:**

11:30-12:30: **Ehud Meir**: 'Algebraic structures and descent by symmetric monoidal categories and Deligne's Theory'

12:30-14:00: Lunch

14:00-15:00: **Lior Bary-Soroker**: 'Sums of two squares of polynomials and the hyperoctahedral group'

15:00-15:30: Coffee and light refreshments in the faculty lounge on the 8th floor

15:30-16:30: **Michael Larsen**: 'Linear Groups'

16:45-17:45: **Michael Zieve:** 'Near-injectivity of polynomial functions on number fields'

18:00: Dinner - in the faculty lounge on the 8th floor

**All lectures will take place at Auditorium 232, **

**Amado Mathematics Building, Technion**

**Organizer: Danny Neftin**

For administrative information please contact: Yael Stern, Workshop Coordinator

Phone: +972-(0)4-8294276\8 Fax: +972-(0)4-8293388 E-mail: cms@math.technion.ac.il

*Announcement:*

**Technion – **Israel Institute of Technology

**Center for Mathematical Sciences**

**Supported by the Mallat Family Fund for Research in Mathematics**

Invites you to a

**DISTINGUISHED LECTURE SERIES**

**Professor Michael Larsen**

**Department of Mathematics, Indiana University**

**Title of talks: "Linear Groups"**

**Abstract:** A linear group is any group of invertible matrices over a field. Many—perhaps one could even say say most—interesting groups can in fact be realized as linear groups, and this is often a useful thing to do, since there are powerful geometric tools for studying matrices.

In my first two talks, I will discuss the structure theory of linear groups. A key role is played by linear algebraic groups, which are defined by polynomial equations in the matrix entries. I will discuss a wide range of results which assert, in one way or another, that well behaved groups are not too far from being linear algebraic. These include Jordan’s theorem and its extensions by Nori, Pink, and myself; the Peter-Weyl theorem; Hilbert’s Fifth Problem; the Chevalley-Pink Theorem; and the classification of finite simple groups.In my third talk, I will try to illustrate how these structural results, and more generally, the algebro-geometric point of view on group theory, can be used in applications to finite and finitely generated groups.

Lecture I: **Monday, 28 December, 2015 at 15:30**

Lecture II: **Tuesday, 29 December, 2015 at 15:30**

Lecture III: **Thursday 31 December, 2015 at 15:30**

**All lectures will take place at Auditorium 232, **

**Amado Mathematics Building, Technion**

Light refreshments will be given before the talks in the Department of Mathematics' lounge on the 8th floor.

For administrative information please contact: Yael Stern, Workshop Coordinator

Phone: +972-(0)4-8294276\8 Fax: +972-(0)4-8293388 E-mail: cms@math.technion.ac.il

*Announcement:*

**Technion – **Israel Institute of Technology

**Center for Mathematical Sciences**

**Supported by the Mallat Family Fund for Research in Mathematics**

Invites you to an ongoing lecture series:

**MATHEMATICAL PHYSICS ON FRIDAYS**

**On the 27th of November**

**Schedule:**

9:30 - Coffee & light refreshments

10:01 - Daniel Ueltschi (The University of Warwick)

11:01 - More coffee & light refreshments

11:21 - Uzy Smilansky (Weizmann Institute of Science)

12:21 - Lunch

** **

**Talk titles:**

Daniel Ueltschi - "Spin 1 system with SU(2)-invariant interactions"

Uzy Smilansky - "Some results on the distribution of spectral moments of random matrix ensembles"

**The lectures will take place at room 814 (8 ^{th} floor), **

**Amado Mathematics Building, Technion**

Coffee & light refreshments will be given in the Department of Mathematics' lounge on the 8th floor.

**For administrative information and car permit to enter the Technion**

**please contact: Yael Stern, Workshop Coordinator**

Phone: +972-(0)4-8294276\8 Fax: +972-(0)4-8293388 E-mail: cms@math.technion.ac.il

Seminar website: http://www.math.tau.ac.il/~sashas1/mathphys.html

*Abstract:*

**Center for Mathematical Sciences**

**Supported by the Mallat Family Fund for Research in Mathematics**

Invites you to a

**SPECIAL LECTURE SERIES**

**Professor Anna Wienhard**

**Mathematics Institute, Universität Heidelberg**

**Title of talks: "Higher Teichmüller Theory"**

Prof. Wienhard will give an introduction to higher Teichmüller theory, review some of the recent results and discuss current and future challenges.

Lecture I: **Monday, 16 November, 2015 at 15:30**

Lecture II: **Tuesday, 17 November, 2015 at 15:30**

Lecture III: **Thursday 19 November, 2015 at 15:30**

All lectures will take place at Auditorium 232, Amado Mathematics Building, Technion

For administrative information please contact: Yael Stern, Workshop Coordinator

Phone: +972-(0)4-8294276\8 Fax: +972-(0)4-8293388 E-mail: cms@math.technion.ac.il

*Announcement:*

Center for Mathematical Sciences

**Mostly Markov Mixing**

Summer Workshop For Graduate Students

(and Post-Docs and Gutsy Undergrads)

Sunday-Wednesday 30.8.15 - 2.9.15

Followed by: Workshop for Researchers (and Students)

Thursday 3.9.15

Technion, Haifa, Israel

**Registration is now closed. **

The workshop will focus on topics connected to and arising from the problem of calculating the mixing rate for Markov processes on large finite state spaces as the size of the state space tends to infinity.

**Featured Mini-Courses:**

Persi Diaconis, Stanford University

Yuval Peres, Microsoft, Redmond, WA

**Additional Lectures:**

Pietro Caputo, University of Rome 3

Elchanan Mossel, University of California, Berkeley

Perla Sousi, University of Cambridge

Johan Jonasson, Chalmers University of Technology

**The conference will end on Thursday the 3rd of September and NOT on Friday the 4th of September!**

**Organizers**: Ross Pinsky, Eddie Mayer-Wolf, Nick Crawford

For information: Yael Stern, Conference Coordinator, Tel: +972-4-8294278 E-mail: cms@math.technion.ac.il

*Announcement:*

ISF- The Israeli Science Foundation CMS- Center for Mathematical Science Coloring Graphs at the Technion Graph Coloring and Chi –boundedness with Algebra, Topology and Probability

The goal of this informal workshop is to bring together researchers in an attempt of a focused attack on some long standing problems in graph coloring. The workshop will deal with variants on classical graph coloring, and related problems, such as cooperative colorings, χ-boundedness, Reed's conjecture and strong colorings.

We have gathered a group of experts in a broad spectrum of areas of Discrete Mathematics, and we hope to benefit from their diverse branches of expertise. Thus, we expect to use approaches such as topological methods, structural tools and the probabilistic method.

** **

**Supported by the Elisha Netanyahu Institute of Advanced Studies in Mathematics**

Organizers: Ron Aharoni, Eli Berger, Maria Chudnovsky, Roy Meshulam

For further administrative information please contact: Yael Stern, Workshop Coordinator Phone: +972-(0)4-8294278 Fax: +972-(0)4-8293388 E-mail: cms@math.technion.ac.il

*Announcement:*

**ERC** **CMS**

**Workshop on Generalizations of Symmetric Spaces**

**17 ^{th}-24^{th} June, 2015**

Registration is now closed

An e-mail will be sent in the next few days to thoses registered. If you have registered and did not recieve an e-mail by April 12, please contact cms@math.technion.ac.il

**Important Note**: When booking your flight, please take into consideration that the conference shuttle leaves on June 17th at 11:30am from Binyamina railway station, which is one hour by train from Ben Gurion airport. We thus recommend that you arrive either in the early morning of the 17th, or at the 16th. In the latter case we can help you find accommodation in Tel Aviv or Haifa for the night.

**The following mini-courses will be given:**

**Michel Brion (Institute Fourier) **"Spherical Varieties"

**Kai-Uwe Bux (Universität Bielefeld) **"Finiteness Properties of Arithmetic Groups"

**Dima Gourevitch (Weizmann Institute) **"Multiplicity One Spaces"

**Bertrand Rémy (École Polytechnique) **"Compactifications of Buildings"

**Contributed talks by:**

Peter Abramenko, Avraham Aizenbud, Uri Bader, Alex Jay Feingold, Maxim Gurevich, OskarHamlet, Max Horn, David Hume, Shachar Carmeli, Alexander Kemarsky, Yury Neretin, Andrei Rapinchuk, Eitan Sayag, Aleksy Tralle**.**

**Organizers: Tobias Hartnick (Technion), Aloysius Helminck (NC State University), Ralf Köhl (JLU Gießen), Amos Nevo (Technion)**

For further administrative information please contact: Yael Stern, Workshop Coordinator

Phone: +972-(0)4-8294278 Fax: +972-(0)4-8293388 E-mail: cms@math.technion.ac.il

*Announcement:*

**Center for Mathematical Sciences **

**Conference on**

Algebraic Geometry, Braids, Analysis

Technion - Israel Institute of Technology, Haifa, Israel

May 18 - May 21, 2015

**The conference is held on the occasion of**

**Professor Vladimir Lin's 80th birthday**

Registration is now closed.

The aim of this conference is to bring together researchers working on algebraic geometry, braids, and analysis, and to discuss some of the recent developments and to identify important problems and new research directions.

The conference is supported by

The Center for Mathematical Sciences at the Technion

and

The Gelbart Institute for Mathematical Sciences, Bar-Ilan University

Scientific Committee: Joan Birman, Mikhail Sodin, Evgeniĭ Gorin

Organization Committee: Yehuda Pinchover, Michail Zhitomirskii

For further information please contact: Shiri Kaplan-Shabat (Conference Coordinator),

E-mail cms@math.technion.ac.il ; Phone: +972-(0)4-8294278

Conference Web page: http://www2.math.technion.ac.il/~pincho/Lin/index.html

*Announcement:*

**Center for Mathematical Sciences**

**Supported by the Mallat Family Fund for Research in Mathematics**

Invites you to a

**SPECIAL LECTURE SERIES**

**Professor John Hinch**

** **

Department of Applied Mathematics and Theoretical Physics

University of Cambridge

** Lecture I:** Explaining the behavior of elastic liquids

Monday, 27 April, 2015 at 15:30, Segoh, Segoh 1.

**Lecture II:** Viscous `drops' falling on a coated vertical fibre

(quite technical and mathematical)

Tuesday, 28 April, 2015 at 15:30, Amado, Room 814.

**Lecture III:** Fluctuations in the sedimentation of particles in a suspension

(review including resolution of long standing paradox)

Thursday 30 April, 2015 at 15:30, Amado, Auditorium 814.

*For further administrative information please contact: Shiri Kaplan- Shabat, CMS Coordinator*

*Phone: +972-(0)4-8294276\8 Fax: +972-(0)4-8293388 E-mail: cms@math.technion.ac.il*

*Announcement:*

#### The Monge-Ampère equation in mathematical modelling

**Prof.Yann Brenier**

CNRS, Ecole Polytechnique, Palaiseau France

**Lecture 1:** A direct application of the Monge-Ampère equation in Cosmology

Monday, 12 Jan, 2015 at 15:30, Amado Auditorium 233

**Lecture 2:** The semi-geostrophic model of atmosphere and ocean dynamics.

Tuesday, 13 Jan, 2015 at 15:30, Amado 814

**Lecture 3:** Maps of minimal distortion and magnetohydrodynamics

Thursday 15 Jan, 2015 at 15:30, Amado 814

**Light refreshments will be given before the talks in the teacher's lounge 8th floor.**

*For further administrative information please contact: Shiri Kaplan- Shabat, CMS Coordinator*

*Phone: +972-(0)4-8294276\8 Fax: +972-(0)4-8293388 E-mail: cms@math.technion.ac.il*

*Announcement:*

We are pleased to invite the Israeli applied math community to participate in the 16th Israeli Mini-Workshop in Applied and Computational Mathematics,

**Time**: Tuesday, December 30th, 2014

**Place**: Technion, Amado Bldg. room 814.

The idea is to create a forum for researchers in applied mathematics, especially younger faculty and students, to get to know other members of the community, and promote discussion and collaboration.

Participation in the workshop is free, but you are asked to register in this website or via link, so we can be adequately prepared for the day. Please register by 12:00 on Sunday, November 30th.

**Meeting organizer:** Nir Gavish

**Series organizers:** Raz Kupferman, Vered Rom-Kedar and Edriss Titi

For more detail and registration, please visit our Workshop webpage

For administrative information please contact: Shiri Kaplan- Shabat, Workshop Coordinator Phone: +972-(0)4-8294276\8 Fax: +972-(0)4-8293388 E-mail: cms@math.technion.ac.il