# Techmath - Math Seminars in Israel

*Abstract:*

**Advisor: **Eli Aljadeff

**Abstract:**

For a Galois extension $K/k$ we consider the question of classifying

the $K/k$-forms of a finite dimensional path algebra $A=k\Gamma$, i.e., find

up to $k$-isomorphism all the $k$-algebras $B$ such

that $A\otimes_{k}K\cong B\otimes_{k}K$. Here $\Gamma$ is an acyclic

quiver. By Galois descent, we show that when $char\left(k\right)=0$

the $K/k$-forms of $A$ are classified by the cohomology pointed

set $H^{1}\left(Gal\left(K/k\right),\,S_{\Gamma}\right)$, where $S_{\Gamma}$

is a certain finite subgroup of automorphisms of the quiver. This

translates the classification of $K/k$-forms of the algebra $k\Gamma$

into a combinatorial problem. We define the notion of combinatoric

forms of a quiver $\Gamma$ and develop a combinatoric descent for

classifing these forms. We equip the combinatoric forms with algebraic

structures (which are certain tensor type path algebras), and show

that the $K/k$-forms of $k\Gamma$ are classified by evaluations

of combinatorial forms of $\Gamma$.

*Abstract:*

Dear Colleagues, we are happy to announce the conference &quot;Singularities, Real and Tropical Geometry and beyond&quot; which will take place in October 15-20, Eilat, Israel. All the further information is here: https://shustin60conf.wixsite.com/home -- best regards, Dmitry Kerner http://www.math.bgu.ac.il/~kernerdm/

*Abstract:*

Dear Colleagues, we are happy to announce the conference &amp;quot;Singularities, Real and Tropical Geometry and beyond&amp;quot; which will take place in Eilat, October 15-20. All the further information is here: https://shustin60conf.wixsite.com/home -- best regards, Dmitry http://www.math.bgu.ac.il/~kernerdm/

*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:*

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

*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

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:*

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: