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Events for Thursday, 29/10/2020 (1)
TE Algebra Seminar - Allan Merino, National University of Singapore 29/10/2020, Thursday, 13:30
Type: Seminar
Name: Algebra Seminar
Title: Transfer of characters in the theta correspondence
Speaker: Allan Merino, National University of Singapore
Place: Zoom meeting (https://technion.zoom.us/j/95771480969), Technion
Abstract:

For every irreducible reductive dual pair (G, G’) in Sp(W), R. Howe proved the existence of an isomorphism between the spaces R(G) and R(G’), where R(G) is the set of infinitesimal equivalence classes of irreducible admissible representations of \tilde{G} which can be realized as a quotient of the metaplectic representation. As proved by Harish-Chandra, all the representations appearing in the correspondence have a character, and this character parametrize entirely the representation. In particular, one way to study the Howe’s duality is to understand the transfer of the characters. In 2000, T. Przebinda introduced the Cauchy-Harish-Chandra integral and conjectured that the correspondence of characters should be obtained via this map. In my talk, after recalling in detail Harish-Chandra’s character theory and Howe’s duality theorem, I am going to introduce carefully the Cauchy-Harish-Chandra integral and explain at the end in which cases the conjecture had been proved, and in particular say few words about my last paper on the transfer of characters of discrete series representations of the unitary groups in the equal rank case.

Link to the zoom meeting: https://technion.zoom.us/j/95771480969

SubmittedBy: Seminar/Colloquium Moderator
EventLink: Event № 1110
Future events (13)
TE Exposure to Applied Math Seminar - Gal Shmuel, Mechanical Eng. 01/11/2020, Sunday, 10:30
Type: Seminar
Name: Exposure to Applied Math Seminar
Title: Metamaterials from mathematics
Speaker: Gal Shmuel, Mechanical Eng.
Place: https://technion.zoom.us/j/98455356689, Technion
SubmittedBy: Seminar/Colloquium Moderator
EventLink: Event № 1106
TE PDE and Applied Mathematics Seminar - Barak Sober, Duke 03/11/2020, Tuesday, 14:30
Type: Seminar
Name: PDE and Applied Mathematics Seminar
Title: Estimation of Manifolds from Point Clouds: Working with Model-less data
Speaker: Barak Sober, Duke
Place: https://technion.zoom.us/j/99490130522, Technion
Abstract:

A common observation in data-driven applications is that data has a low intrinsic dimension, at least locally.Thus, when one wishes to work with data that is not governed by a clear set of equations, but still wishes to perform statistical or other scientific analysis, an optional model is the assumption of an underlying manifold from which the data was sampled.This manifold, however, is not given explicitly but we can obtain samples of it (i.e., the individual data points).In this talk, we will consider the mathematical problem of estimating manifolds from a finite set of samples, possibly recorded with noise.Using a Manifold Moving Least-Squares approach we provide an approximant manifold with high approximation order in both the Hausdorf sense as well as in the Riemannian metric (i.e., a nearly isometry).In the case of bounded noise, we present an algorithm that is guaranteed to converge in probability when the number of samples tends to infinity.The motivation for this work is based on the analysis of the evolution of shapes through time (e.g., handwriting or primates' teeth) and we will show how this framework can be utilized to answer scientific questions in paleontology and archaeology.

SubmittedBy: Seminar/Colloquium Moderator
EventLink: Event № 1101
TE What Is Seminar - Eran Igra, Technion 05/11/2020, Thursday, 16:30
Type: Seminar
Name: What Is Seminar
Title: What Is: The Schwarzian Derivative
Speaker: Eran Igra, Technion
Place: https://technion.zoom.us/j/94479189351, Technion
Announcement:

The 'What Is' seminar returns!

The next 'What Is' talk will be given by Eran Igra on:The Schwarzian Derivative.

The 'What is' seminar is by grad students, for grad students. All talks will be at an introductory level.  Bring your own pizza and beer.

SubmittedBy: Seminar/Colloquium Moderator
EventLink: Event № 1112
TE Exposure to Applied Math Seminar - Shay Stern, Biology 08/11/2020, Sunday, 10:30
Type: Seminar
Name: Exposure to Applied Math Seminar
Title: Behavioral variation across different timescales
Speaker: Shay Stern, Biology
Place: https://technion.zoom.us/j/98455356689, Technion
SubmittedBy: Seminar/Colloquium Moderator
EventLink: Event № 1107
TE PhD Seminar - Rafi Schwartz 10/11/2020, Tuesday, 10:00
Type: Seminar
Name: PhD Seminar
Title: A Polar-Cartesian Mild Slope Equation
Speaker: Rafi Schwartz
Place: Zoom meeting, Technion
Abstract:

Join Zoom Meeting https://us04web.zoom.us/j/2331841631?pwd=dlUxeXFmVlY4REFEdHBUZTkzM0hDQT09

Meeting ID: 233 184 1631

Passcode: 4NGauG

Advisor: Prof. Agnon Yehuda

Abstract: The irrotational ow of an incompressible homogeneous inviscid uid is a three dimensional problem. Mild-slope type equations reduce the three- dimensional ow problem description to a two-dimensional one by assuming a vertical structure to the velocity components. The mild-slope assumption states that the change in the water depth over a wavelength is small. In the classi- cal mild slope equations the vertical pro le is constructed based on a uniform depth approximation. The di erent versions di er in the parameter utilized to formulate the equation and the order of expansion of the small parameter. A new long-wave limit equation is derived for which the vertical pro le is constructed based on a constant bottom slope approximation. This increases the order of the bottom derivatives in the equation while maintaining the same order and structure. The vertical pro le is developed by use of a polar coordinate system as opposed to a Cartesian coordinate and leads to an improved dispersion relation as well. The equation is simulated numerically for several benchmark problems with known analytical solutions. The results of the polar-cartesian mild slope equa- tion simulations are compared to the extended shallow water equation which shares a similar dispersion relation and expansion order. 1

SubmittedBy: Shiri Kaplan-Shabat , mathsec@technion.ac.il
EventLink: Event № 1109
TE PDE and Applied Mathematics Seminar - Nadav Dym, Duke 08/12/2020, Tuesday, 14:30
Type: Seminar
Name: PDE and Applied Mathematics Seminar
Title: A talk by Nadav Dym
Speaker: Nadav Dym, Duke
Place: Zoom - link will be announced, Technion
SubmittedBy: Seminar/Colloquium Moderator
EventLink: Event № 1111
TE CMS 09/12/2020, Wednesday, 09:00 - 17:00
Type: Workshop
Name: CMS
Title: A Workshop on Geometry and Optimization
Speaker:
Place: Zoom, Technion
Announcement:

A Workshop on Geometry and Optimization, in memory of Professor Victor Zalgaller, is scheduled to take place on December 9, 2020, via Zoom, in the Department of Mathematics of the Technion  --  Israel Institute of Technology, under the auspices of the Center for Mathematical Sciences. 

 Organizing Committee: Michael Khanevsky, Simeon Reich and Alex Zaslavski

 

The list of confirmed speakers:

  • Mark Agranovsky, Bar-Ilan University, On integrable domains and hypersurfaces
  • Misha Gromov, IHES and New York University, TBA
  • Bo'az Klartag, Weizmann Institute of Science, Steiner point and the problem of chasing convex bodies
  • Russell Luke, Universitaet Goettingen, TBA
  • Roman Polyak, the Technion - IIT, Nonlinear Equilibrium vs. LP for Optimal Allocation of Limited Resources
  • Vladimir Shikhman, TU Chemnitz, On nondegenerate M-stationary points for sparsity constrained nonlinear optimization
  • Alexander Solynin, Texas Tech University, When Analysis needs Geometry: How I worked with V.A. Zalgaller
  • Oliver Stein, Karlsruhe Institute of Technology, "A general branch-and-bound framework for global multiobjective optimization"
SubmittedBy: Yael Stern , cms@math.technion.ac.il
EventLink: Event № 1097
TE Exposure to Applied Math Seminar - Daniel Zelazo 24/01/2021, Sunday, 10:30 - 12:30
Type: Seminar
Name: Exposure to Applied Math Seminar
Title: Graph Theory for Multi-Agent and Networked Systems
Speaker: Daniel Zelazo
Place: https://technion.zoom.us/j/98455356689, Technion
SubmittedBy: Seminar/Colloquium Moderator
EventLink: Event № 1105
TE CMS 31/05/2021, Monday, 09:30 - 04/06/2021, Friday, 13:00
Type: Conference
Name: CMS
Title: Challenges in probability and statistical mechanics
Speaker:
Place: Amado 232, Technion
Announcement:
SubmittedBy: Yael Stern , cms@math.technion.ac.il
EventLink: Event № 1087
TE CMS 20/06/2021, Sunday, 10:00 - 24/06/2021, Thursday, 17:00
Type: Conference
Name: CMS
Title: Noncommutative analysis at the Technion
Speaker:
Place: Amado 232, Technion
Announcement:
SubmittedBy: Yael Stern , cms@math.technion.ac.il
EventLink: Event № 1088
TE CMS 11/07/2021, Sunday, 09:30 - 15/07/2021, Thursday, 17:30
Type: Conference
Name: CMS
Title: Ergodic theorems, equidistribution and counting
Speaker:
Place: Amado 232 (or Butler Auditorium), Technion
Abstract:
SubmittedBy: Yael Stern , cms@math.technion.ac.il
EventLink: Event № 1089
TE CMS 25/07/2021, Sunday, 10:00 - 29/07/2021, Thursday, 17:00
Type: Conference
Name: CMS
Title: Summer School 2021: Paroles Paroles
Speaker:
Place: Amado 232, Technion
Announcement:
SubmittedBy: Yael Stern , cms@math.technion.ac.il
EventLink: Event № 1090
TE CMS 29/08/2021, Sunday, 09:30 - 03/09/2021, Friday, 14:00
Type: Workshop
Name: CMS
Title: Summer projects in Math
Speaker:
Place: Amado 232, Technion
Announcement:

TBA...

SubmittedBy: Yael Stern , cms@math.technion.ac.il
EventLink: Event № 1091