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Today, Tuesday, September 24, 2019

Algebra and Number Theory Seminar  Questions or comments?

Posted August 27, 2019
Last modified September 5, 2019

3:10 pm - 4:00 pm 285 Lockett

Moises Herradon Cueto, Louisiana State University
The local type of difference equations

D-modules allow us to study differential equations through the lens of algebraic geometry. They are widely studied and have been shown to be full of structure. In contrast, the case of difference equations is lacking some of the most basic constructions. We focus on the following question: D-modules have a clear notion of what it means to restrict to a (formal) neighborhood of a point, namely extension of scalars to a power series ring. However, what does it mean to restrict a difference equation to a neighborhood of a point? I will give an answer which encompasses the intuitive notions of a "zero" and a "pole" of a difference equation, but further it is consistent in two more ways. First of all, we can show that restricting a difference equation to a point and to its complement is enough to recover the difference equation. Secondly, there exists a local Mellin transform analogous to the local Fourier transform. The local Fourier transform describes singularities of a D-module on the affine line in terms of the singularities of its Fourier transform. Similarly, the Mellin transform is an equivalence between D-modules on the punctured affine line and difference modules on the line, and we can relate singularities on both sides via this local Mellin transform. I will also talk about how to apply the same ideas to other kinds of difference equations, such as elliptic equations, which generalize difference and differential equations at once.

Tomorrow, Wednesday, September 25, 2019

Informal Geometry and Topology Seminar  Questions or comments?

Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233

Ryan Leigon, Louisiana State University
TBD

Tuesday, October 1, 2019

Algebra and Number Theory Seminar  Questions or comments?

Posted September 7, 2019

3:10 pm - 4:00 pm 285 Lockett

Solly Parenti, University of Wisconsin, Madison
TBA

Wednesday, October 2, 2019

Informal Geometry and Topology Seminar  Questions or comments?

Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233

Jiten Ahuja, Louisiana State University
TBD

Tuesday, October 8, 2019

Algebra and Number Theory Seminar  Questions or comments?

Posted September 14, 2019

3:10 pm - 4:00 pm 285 Lockett

Chenliang Huang, Indiana University-Purdue University Indianapolis (IUPUI)
TBA

Wednesday, October 9, 2019

Informal Geometry and Topology Seminar  Questions or comments?

Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233

Sudipta Ghosh, Louisiana State University
TBD

Monday, October 14, 2019

Applied Analysis Seminar  Questions or comments?

Posted September 4, 2019

3:30 pm - 4:30 pm Lockett 233

Phuc Nguyen, Department of Mathematics, Louisiana State University
TBA

Wednesday, October 16, 2019

Informal Geometry and Topology Seminar  Questions or comments?

Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233

Amit Kumar, Louisiana State University
TBD

Wednesday, October 23, 2019

Informal Geometry and Topology Seminar  Questions or comments?

Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233

Rima Chatterjee, Louisiana State University
TBD


Geometry and Topology Seminar  Seminar website

Posted September 11, 2019

3:30 pm - 4:30 pm Lockett 233

Hung Cong Tran, University of Oklahoma
TBD

Tuesday, October 29, 2019

Algebra and Number Theory Seminar  Questions or comments?

Posted August 19, 2019

3:10 pm - 4:00 pm

Changningphaabi Namoijam, Texas A&M
TBA


Colloquium  Questions or comments?

Posted September 13, 2019

3:30 pm - 4:20 pm TBD

Marta Lewicka, University of Pittsburgh
TBD

Wednesday, October 30, 2019

Informal Geometry and Topology Seminar  Questions or comments?

Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233

Nurdin Takenov, Louisiana State University
TBD


Geometry and Topology Seminar  Seminar website

Posted September 9, 2019

3:30 pm - 4:30 pm Lockett 233

Viet Dung Nguyen, Vietnam Academy of Science and Technology Institute of Mathematics
TBD

Thursday, October 31, 2019

Colloquium  Questions or comments?

Posted September 13, 2019

3:30 pm - 4:20 pm TBD

Selim Esedoglu , University of Michigan
TBD

Tuesday, November 5, 2019

Computational Mathematics Seminar  

Posted September 9, 2019

3:30 pm - 4:30 pm 1034 Digital Media Center

Jose Garay, Louisiana State University
TBA

Wednesday, November 6, 2019

Informal Geometry and Topology Seminar  Questions or comments?

Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233

Rob Quarles, Louisiana State University
TBD


Geometry and Topology Seminar  Seminar website

Posted September 16, 2019

3:30 pm - 4:30 pm Lockett 233

Jason Behrstock, CUNY Graduate Center and Lehman College
TBD


Data-Science Seminar  

Posted August 9, 2019

3:30 pm - 4:20 pm TBA

Dejan Slepcev, Carnegie Mellon University
TBA

Wednesday, November 13, 2019

Informal Geometry and Topology Seminar  Questions or comments?

Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233

Abel Lopez, Louisiana State University
TBD

Tuesday, November 19, 2019

Computational Mathematics Seminar  

Posted September 9, 2019

3:30 pm - 4:30 pm 1034 Digital Media Center

Yakui Huang, Hebei University of Technology
TBA

Wednesday, November 20, 2019

Informal Geometry and Topology Seminar  Questions or comments?

Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233

John Lien, Louisiana State University
TBD


Harmonic Analysis Seminar  Abstract and additional information

Posted August 16, 2019

3:30 pm - 4:20 pm

Tao Mei, Balyor University
TBA

Thursday, November 21, 2019

Colloquium  Questions or comments?

Posted September 10, 2019

3:30 pm - 4:20 pm TBD

Leonid Berlyand, Department of Mathematics, Penn State University
TBD

Monday, November 25, 2019

Applied Analysis Seminar  Questions or comments?

Posted September 6, 2019

3:30 pm - 4:30 pm Lockett 233

Isaac Michael, Louisiana State University
TBA

Thursday, December 5, 2019

Colloquium  Questions or comments?

Posted September 13, 2019

3:30 pm - 4:20 pm TBD

Eric Rowell, Texas A&M
TBD