Posted April 30, 2019

1:00 pm - 4:00 pm Lockett 232Comprehensive/PhD Qualifying Exam in Algebra

This exam is part of the PhD Qualifying Examination in Mathematics. Use this link for the registration form: Comprehensive Exam Registration

Posted April 30, 2019

1:00 pm - 4:00 pm Lockett 232Comprehensive/PhD Qualifying Exam in Analysis

This exam is part of the PhD Qualifying Examination in Mathematics. Use this link for the registration form: Comprehensive Exam Registration

Posted April 30, 2019

1:00 pm - 4:00 pm Lockett 232Comprehensive/PhD Qualifying Exam in Topology

This exam is part of the PhD Qualifying Examination in Mathematics. Use this link for the registration form: Comprehensive Exam Registration

Informal Geometry and Topology Seminar
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Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233
Shea Vela-Vick, Louisiana State University

An introduction to low-dimensional topology and contact geometry

Posted August 31, 2019

3:30 pm - 4:30 pm Keisler Lounge, Lockett 321What We Did This Summer

Students will give short presentations on their summer experiences: internships, summer camps, the IMA bootcamp, etc. Join us to hear about their experiences and learn more about the LSU SIAM Student Chapter.

Applied Analysis Seminar
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Posted September 4, 2019

3:30 pm - 4:30 pm Lockett 233
Wei Li, LSU

Fluorescence ultrasound modulated optical tomography (fUMOT) in the radiated transport regime with angularly averaged measurements

We consider an inverse transport problem in fluorescence ultrasound modulated optical tomography (fUMOT) with angularly averaged illuminations and measurements. We study the uniqueness and stability of the reconstruction of the absorption coefficient and the quantum efficiency of the fluorescent probes. Reconstruction algorithms are proposed and numerical validations are performed. This is joint work with Yang Yang and Yimin Zhong, and it is an extension of our previous work done in 2018, where a diffusion model for this problem was considered.

Informal Geometry and Topology Seminar
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Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233
Scott Baldridge, Louisiana State University

An introduction to Mirror Symmetry, Calabi-Yau manifolds, and Special Lagrangian Cones

Abstract: In this talk we look at the history of mirror symmetry as it came out of string theory (i.e., a 10-dimensional universe where particles are "strings"). We use that historical account to explain some of the motivation behind studying Calabi-Yau manifolds and special Lagrangian fibrations of these manifolds, which lead to my studying of special Lagrangian cones in my work. The goal is to use this narrative to introduce and discuss common terms (symplectic forms, Lagrangian, fiber bundles and fibrations, etc.) that will be used throughout the graduate student seminar this year. In that sense, this is not going to be an overly technical talk.

Applied Analysis Seminar
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Posted September 13, 2019

3:30 pm - 4:30 pm Lockett 233
Isaac Michael, Louisiana State University

Weighted Birman-Hardy-Rellich type Inequalities with Refinements

In 1961, Birman proved a sequence of inequalities valid for functions in C_0^{n}((0, infty)) containing the classical (integral) Hardy inequality and the well-known Rellich inequality. Over the years there has been much effort in improving these inequalities with weights and singular logarithmic refinement terms. Using a simple variable transformation in integrals, we prove a generalization of these inequalities involving unrestricted power-type weights and logarithmic refinement terms, on both the exterior interval (R, infty) and the interior interval (0, R) for any finite R>0. This is based on joint work with Fritz Gesztesy, Lance Littlejohn, and Michael Pang.

Informal Geometry and Topology Seminar
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Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233
Justin Murray, Louisiana State University

TBD

Combinatorics Seminar
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Posted September 17, 2019

3:30 pm - 4:30 pm Lockett Hall 237
Farid Bouya, Louisiana State University

Seymour''s Second Neighborhood Conjecture from a Different Perspective

Seymour''s Second Neighborhood Conjecture states that every orientation of every simple graph has at least one vertex $v$ such that the number of vertices of out-distance 2 from $v$ is at least as large as the number of vertices of out-distance 1 from it. We present an alternative statement of the conjecture in the language of linear algebra.

Algebra and Number Theory Seminar
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Posted August 27, 2019

Last modified September 5, 2019

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.

Informal Geometry and Topology Seminar
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Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233
Ryan Leigon, Louisiana State University

TBD

College of Science Inclusive Excellence Lecture Series

Posted September 5, 2019

3:30 pm - 5:00 pm Hill Memorial Library
Suzanne Lenhart, University of Tennessee

One Health: Connecting Humans, Animals and the Environment

"One Health" is a multidisciplinary approach to improving the health of people, animals and the environment. Environmental, wildlife, domestic animal, and human health fall under the One Health concept. Mathematical models of infectious diseases involving animals, environmental features, and humans will be presented. These models can suggest management policies and predict disease spread, and examples including La Crosse virus and Zika virus will be discussed. (Reception after the talk)

Algebra and Number Theory Seminar
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Posted September 7, 2019

3:10 pm - 4:00 pm 285 Lockett
Solly Parenti, University of Wisconsin, Madison

TBA

Informal Geometry and Topology Seminar
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Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233
Jiten Ahuja, Louisiana State University

TBD

Algebra and Number Theory Seminar
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Posted September 14, 2019

3:10 pm - 4:00 pm 285 Lockett
Chenliang Huang, Indiana University-Purdue University Indianapolis (IUPUI)

TBA

Informal Geometry and Topology Seminar
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Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233
Sudipta Ghosh, Louisiana State University

TBD

Applied Analysis Seminar
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Posted September 4, 2019

3:30 pm - 4:30 pm Lockett 233
Phuc Nguyen, Department of Mathematics, Louisiana State University

TBA

Informal Geometry and Topology Seminar
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Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233
Amit Kumar, Louisiana State University

TBD

Informal Geometry and Topology Seminar
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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

Algebra and Number Theory Seminar
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Posted August 19, 2019

3:10 pm - 4:00 pm
Changningphaabi Namoijam, Texas A&M

TBA

Colloquium
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Posted September 13, 2019

3:30 pm - 4:20 pm TBD
Marta Lewicka, University of Pittsburgh

TBD

Informal Geometry and Topology Seminar
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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

Colloquium
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Posted September 13, 2019

3:30 pm - 4:20 pm TBD
Selim Esedoglu , University of Michigan

TBD

Computational Mathematics Seminar

Posted September 9, 2019

3:30 pm - 4:30 pm 1034 Digital Media Center
Jose Garay, Louisiana State University

TBA

Informal Geometry and Topology Seminar
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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

Posted August 9, 2019

3:30 pm - 4:20 pm TBA
Dejan Slepcev, Carnegie Mellon University

TBA

Informal Geometry and Topology Seminar
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Posted September 11, 2019

1:30 pm - 3:00 pm Lockett 233
Abel Lopez, Louisiana State University

TBD

Computational Mathematics Seminar

Posted September 9, 2019

3:30 pm - 4:30 pm 1034 Digital Media Center
Yakui Huang, Hebei University of Technology

TBA

Informal Geometry and Topology Seminar
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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

Colloquium
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Posted September 10, 2019

3:30 pm - 4:20 pm TBD
Leonid Berlyand, Department of Mathematics, Penn State University

TBD

Applied Analysis Seminar
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Posted September 6, 2019

3:30 pm - 4:30 pm Lockett 233
Isaac Michael, Louisiana State University

TBA

Colloquium
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Posted September 13, 2019

3:30 pm - 4:20 pm TBD
Eric Rowell, Texas A&M

TBD