Calendar

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Tuesday, August 26, 2025

Posted August 2, 2025
Last modified August 20, 2025

Algebra and Number Theory Seminar Questions or comments?

2:00 pm – 3:00 pm Lockett 233 or click here to attend on Zoom

Joseph DiCapua, Louisiana State University
Lubin–Tate Formal Group Laws

In this expository talk, we introduce Lubin–Tate formal group laws. The torsion points of a Lubin–Tate formal group law are defined, and we discuss the endomorphism ring of such a formal group law. Certain torsion points are used to define Coleman's trace operator, an important tool in Iwasawa theory. We briefly mention how Lubin–Tate formal group laws are used in one construction of the maximal abelian extension of a finite extension of the $p$-adics.

Posted August 16, 2025
Last modified August 21, 2025

Informal Analysis Seminar Questions or comments?

3:30 pm – 4:30 pm Lockett 232

Moisés Gómez-Solís, Louisiana State University
Laura Kurtz, Louisiana State University
Organizational Meeting

Posted August 18, 2025

Discussion and Training in Combinatorics

3:30 pm Lockett Hall 233

Gyaneshwar Agrahari, LSU
Emmanuel Astante, Louisiana State University
Organizational Meeting of DTC Seminar

The first meeting of the Discussion and Combinatorics Seminar will be held on this day and time. In this meeting, we will introduce everyone and give the details of how the seminar will be run.

Wednesday, August 27, 2025

Posted July 21, 2025
Last modified August 17, 2025

Informal Geometry and Topology Seminar Questions or comments?

1:30 pm Lockett Hall 233

Krishnendu Kar, Louisiana State University
Matthew Lemoine, Louisiana State University
Organizational Meeting

Please join us for the Informal Geometry and Topology Seminar. This seminar is an opportunity for grad students to get experience talking in front of an audience and practicing giving talks. In this first meeting, we will decide which topic/book/paper that we will follow for our discussion during the Fall semester. We will also have opportunities for individual talks. For more information, feel free to contact Matthew Lemoine or Krishnendu Kar.

Tuesday, September 2, 2025

Posted August 2, 2025
Last modified August 20, 2025

Algebra and Number Theory Seminar Questions or comments?

2:00 pm – 3:00 pm Lockett 233 or click here to attend on Zoom

Joseph DiCapua, Louisiana State University
Parametrization of Formal Norm Compatible Sequences

We give a classification of power series parametrizing Lubin–Tate trace compatible sequences. This proof answers a question posed in the literature by Berger and Fourquaux. Lubin–Tate trace compatible sequences are a generalization of norm compatible sequences, which arise in Iwasawa theory and local class field theory. The result we prove generalizes the interpolation theorem proved by Coleman in the classical norm compatible sequence case. We also, jointly with Victor Kolyvagin, give a method for finding such series explicitly in certain special cases.

Friday, September 5, 2025

Posted August 11, 2025

Control and Optimization Seminar Questions or comments?

10:30 am – 11:20 am Zoom (click here to join)

Gabriela Gonzalez, Louisiana State University Member, US National Academy of Sciences
TBA

Tuesday, September 16, 2025

Posted August 2, 2025
Last modified August 3, 2025

Algebra and Number Theory Seminar Questions or comments?

2:00 pm – 3:00 pm Lockett 233 or click here to attend on Zoom

Hang Xue, The University of Arizona
TBA

Tuesday, September 23, 2025

Posted August 2, 2025

Algebra and Number Theory Seminar Questions or comments?

2:00 pm – 3:00 pm Lockett 233 or click here to attend on Zoom

Andreas Mono, Vanderbilt University
TBA

Friday, October 3, 2025

Posted August 14, 2025

Control and Optimization Seminar Questions or comments?

10:30 am – 11:20 am Zoom (click here to join)

Xin Zhang, New York University
TBA

Posted March 28, 2025
Last modified April 15, 2025

Applied Analysis Seminar Questions or comments?

3:30 pm TBA

Wenxiong Chen , Yeshiva University
TBA

Monday, October 6, 2025

Posted March 16, 2025
Last modified August 3, 2025

Applied Analysis Seminar Questions or comments?

2:30 pm TBA

Nicola Garofalo, Arizona State University Charles Wexler Professor in Mathematics,
TBA

Posted August 3, 2025

Applied Analysis Seminar Questions or comments?

3:30 pm TBA

Donatella Danielli, Arizona State University School Director and Foundation Professor
TBA

Friday, October 10, 2025

Posted August 1, 2025

Control and Optimization Seminar Questions or comments?

10:30 am – 11:20 am Zoom (click here to join)

Felix Schwenninger, University of Twente, The Netherlands
TBA

Tuesday, October 14, 2025

Posted August 2, 2025

Algebra and Number Theory Seminar Questions or comments?

2:00 pm – 3:00 pm Lockett 233 or click here to attend on Zoom

Kenz Kallal, Princeton University
TBA

Wednesday, November 5, 2025

Posted August 21, 2025

Geometry and Topology Seminar Seminar website

3:30 pm Lockett 233

Matthew Zaremsky, University at Albany (SUNY)
TBD

Thursday, November 6, 2025

Posted August 19, 2025

Colloquium Questions or comments?

3:30 pm Lockett 232

David Roberts, University of Minnesota, Morris
TBA

Friday, November 7, 2025

Posted July 26, 2025

Control and Optimization Seminar Questions or comments?

10:30 am – 11:20 am Zoom (click here to join)

Rami Katz, Università degli Studi di Trento, Italy
Oscillations in Strongly 2-Cooperative Systems and their Applications in Systems Biology

The emergence of sustained oscillations (via convergence to periodic orbits) in high-dimensional nonlinear dynamical systems is a non-trivial question with important applications in control of biological systems, including the design of synthetic bio-molecular oscillators and the understanding of circadian rhythms governing hormone secretion, body temperature and metabolic functions. In systems biology, the mechanism underlying such widespread oscillatory biological motifs is still not fully understood. From a mathematical perspective, the study of sustained oscillations is comprised of two parts: (i) showing that at least one periodic orbit exists and (ii) studying the stability of periodic orbits and/or characterizing the initial conditions which yield solutions that converge to periodic trajectories. In this talk, we focus on a specific class of nonlinear dynamical systems that are strongly 2-cooperative. Using the theory of cones of rank k, the spectral theory of totally positive matrices and Perron-Frobenius theory, we will show that strongly 2-cooperative systems admit an explicit set of initial conditions of positive measure, such that every solution emanating from this set converges to a periodic orbit. We further demonstrate our results using the n-dimensional Goodwin oscillator and a 4-dimensional biological oscillator based on RNA–mediated regulation.

Monday, November 10, 2025

Posted August 21, 2025

Applied Analysis Seminar Questions or comments?

3:30 pm Lockett Hall 233

Roy Goodman, New Jersey Institute of Technology
Probably Something on Hamiltonian Systems

Friday, November 14, 2025

Posted August 1, 2025

Control and Optimization Seminar Questions or comments?

10:30 am – 11:20 am Zoom (click here to join)

Thinh Doan, University of Texas at Austin AFOSR YIP and NSF CAREER Awardee
TBA

Friday, November 21, 2025

Posted July 13, 2025
Last modified July 18, 2025