Welcome to the Department of Mathematics


אני שמח להודיע כי בסמסטר אביב תשע"ה, נבחרו על-פי ציוני משאל המרצה הטוב

מרצה מצטיינת טכניונית (הצטיינות יתרה בהוראה):

לודה מרקוס, לידיה פרס-הרי, עליזה מלק ציון.

ציון לשבח על הצטיינות בהוראה:

רון הולצמן, רועי משולם, רוס פינסקי, אדי מאיר-וולף, דניאלה אבידן, לודה מרקוס, אביב צנזור, שוקי ארושס, סילביה בהר.

ברכות לכולם על הזכייה!


ברכות לאורי שפירא על זכייתו בפרס קריל (KRILL) לשנת תשע"ה.

פרס קריל ניתן על הצטיינות מדעית ומוענק יל ידי קרן וולף היוקרתית.

הפרס הוא אות כבוד לאורי, לפקולטה למתמטיקה ולטכניון כולו.

Faculty Activities
Nonlinear Analysis and Optimization Seminar - Miroslav Bacak (Telecom ParisTech)
26/04/2015, Sunday, 14:30
Type : Seminar
Name : Nonlinear Analysis and Optimization Seminar
Title : Discrete and continuous gradient flows of convex separable functions
Speaker : Miroslav Bacak (Telecom ParisTech)
Place : Room 814, Amado Mathematics Building, Technion

Convex functions which are given as a sum of marginal convex functions have been studied in analysis and optimization for a long time. In my talk I will focus on discrete and continuous gradient flows of such functions and present some of the new results in this area.

Submitted by : Simeon Reich, sreich@tx.technion.ac.il
Event № : 56
PDE and Applied Mathematics Seminar - Petru Mironescu (Lyon)
28/04/2015, Tuesday, 14:30
Type : Seminar
Name : PDE and Applied Mathematics Seminar
Title : Energy concentration of circle-valued maps
Speaker : Petru Mironescu (Lyon)
Place : Amado 719, Technion

We consider maps $u:\Omega\to {\mathbb S}^1$ having some Sobolev regularity $u\in W^{s,p}$. In several interesting situations, either

a) such maps need not have a phase  $\varphi$ with the same regularity as $u$, or 

b) the phase $\varphi$ exists but is not controlled by the norm of $u$.

 In  case a), I obtained some time ago a structure result (« factorization ») allowing to write each such $u$ as $u=v\, w$, where $v$ lifts and $w$ is « smoother » than $u$. In the first part of the talk, I will present a very simple proof of this result, based on the theory of weighted Sobolev spaces, that I will revisit. 

Case b) occurs e.g. in the problem of the existence of a « minimal » (in the sense of an appropriate Sobolev seminorm) map $u: {\mathbb S}^1\to {\mathbb S}^1$ winding once around the unit circle. In the second part of the talk, I will present a modest progress in this direction, based on a geometric approach to the maximum principle in two dimensions.The common theme of the two arguments is a geometric detection of the energy concentration of manifold-valued maps.

Submitted by : Ram Band, ramband@tx.technion.ac.il
Event № : 61
Free Analysis Seminar - Ami Viselter (Haifa University)
28/04/2015, Tuesday, 15:30
Type : Seminar
Name : Free Analysis Seminar
Title : Every convex free basic semi-algebraic set has an LMI representation
Speaker : Ami Viselter (Haifa University)
Place : Amado 709, Technion

We will start a series of lectures in which we will study the paper "Every convex free basic semi-algebraic set has an LMI representation" by Helton-McCullough (Annals of Math., 2012). 

The main result is, roughly, that every convex free set defined by matrix valued polynomial inequalities has another representation - a Linear Matrix Inequality (LMI) representation, that is, it is given by matrix valued LINEAR inequailties. 

Submitted by : Orr Shalit, oshalit@tx.technion.ac.il
Event № : 64
Colloquium - Jinesh Machchhar
03/05/2015, Sunday, 13:30
Type : Seminar
Name : Colloquium
Title : Solid Sweeps in Computer Aided Geometric Design
Speaker : Jinesh Machchhar
Place : Taub 337, Technion
Solid sweep is the envelope of the swept volume of a given solid moving along a one parameter family of rigid motions in 3 dimensional space.  Solid sweep is a powerful and versatile surface design tool which has found uses in many areas like CNC-machining verification, collision detection and packaging.  This work aims to develop a robust computational framework for sweeps in the realm of boundary representation (brep) format, wherein, the input solid as well as the outputted swept volume are represented in brep. This involves the following considerations: (i) Giving an accurate parametrization of the faces and edges in the brep of the swept volume, (ii) Resolving self-intersections and singularities, and
(iii) Computing topological information, viz., adjacency relations amongst the faces, edges and vertices of the swept volume as well as the orientation of these.

In almost all non-trivial sweeps, there exists no closed form parametrization of the envelope surface. We address this problem via the procedural paradigm in which the parametric definitions of curves and surfaces are stored as numerical procedures.

We give a novel classification of sweeps into simple, decomposable and non-decomposable based on the complexity of trim regions. A novel geometric invariant aids in efficient classification as well as in locating the trim curves.

We show that while the global brep structure of the input solid and that of the envelope are quite different, locally they are similar.  This aids in lifting the brep structure of the solid to that of the envelope.

(Based on joint work with Milind Sohoni and Bharat Adsul)
Submitted by : sigal zemach, sigal@cs.technion.ac.il
Event № : 1473
Nonlinear Analysis and Optimization Seminar - Marina Prokhorova (Ekaterinburg)
03/05/2015, Sunday, 14:30
Type : Seminar
Name : Nonlinear Analysis and Optimization Seminar
Title : The index theorem for self-adjoint elliptic operators with local boundary conditions
Speaker : Marina Prokhorova (Ekaterinburg)
Place : Room 814, Amado Mathematics Building, Technion
Files : Poster 1
Submitted by : Simeon Reich, sreich@tx.technion.ac.il
Event № : 57
Center for Mathematical Sciences Activities
CMS Special Lecture Series - Prof. John Hinch
27/04/2015, Monday, 15:30 - 30/04/2015, Thursday, 15:30
Type : Lecture series
Name : CMS
Title : CMS Special Lecture Series
Speaker : Prof. John Hinch
Place : Monday 27.4- Segoh 1, Tuesday 28.4- room 814, Thursday 30.4- room 231, Technion

Center for Mathematical Sciences

Supported by the Mallat Family Fund for Research in Mathematics

Invites you to a


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 231.

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

Files : Prof. John Hinch
Submitted by : cms@math.technion.ac.il
Event № : 32
18/05/2015, Monday, 09:00 - 21/05/2015, Thursday, 16:00
Type : Conference
Name : CMS
Title : Conference in honor of Lin's 80th Birthday
Speaker :
Place : T.B.A, Technion

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 open until April 1st. 

 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.


Participants include:

M. Agranovsky         P. Kuchment                  A. Pinkus

T. Bandman              A. Libgober                   P. Russell

G. Belitskii                 V. Lin                            I. Scherbak

V. Bergelson              M. Lyubich                   V. Tkachenko

A. Brudnyi                  Y. Lyubich                    V. Vassiliev 

A. Eremenko              L. Makar-Limanov         B. Wajnryb         

S. Gindikin                  K. Masuda                    Y. Zarhin  

V. Gurarii                    V. Milman                     M. Zaidenberg 

S. Kaliman                  M. Miyanishi                V. Zinde-Walsh  

A. Khovanskii               A. Olevskii                   N. Zobin

M. Koras                     S. Orevkov                    


The conference is supported by

The Center for Mathematical Sciences at the Technion


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://www.math.technion.ac.il/cms/decade_2011-2020/year_2014-2015/Lin/

Files : List of ParticipantsPosterTransportation
Submitted by : cms@math.technion.ac.il
Event № : 33
17/06/2015, Wednesday, 09:00 - 24/06/2015, Wednesday, 16:00
Type : Workshop
Name : CMS
Title : Generalizations of Symmetric Spaces
Speaker :
Place : Nachsholim Resort, Technion

ERC                CMS

Workshop on Generalizations of Symmetric Spaces

17th-24th 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"


Additional research talks will be given by the participants

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

For further 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

Files : Poster
Submitted by : cms@math.technion.ac.il
Event № : 34