Calendar
Posted November 5, 2025
1:00 pm – 4:00 pm Lockett Hall 232Qualifier Exam in Analysis
Event contact: Stephen Shipman
Posted November 5, 2025
1:00 pm – 4:00 pm Lockett Hall 232Qualifier Exam in Topology
Event contact: Stephen Shipman
Posted November 5, 2025
Last modified December 24, 2025
Qualifier Exam in Algebra
Event contact: Stephen Shipman
Posted November 5, 2025
1:00 pm – 4:00 pm Lockett Hall 232Qualifier Exam in Applied Math
Event contact: Stephen Shipman
Posted December 29, 2025
Informal Analysis Seminar Questions or comments?
12:30 pm – 1:30 pm tbd
Moisés Gómez-Solís, Louisiana State University
Laura Kurtz, Louisiana State University
Organizational Meeting
Posted November 24, 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
Join us for the first meeting of the Spring Semester 2026 Informal Geometry and Topology Seminar to decide which topic we will follow. The Informal Geometry and Topology Seminar is an opportunity for graduate students to get experience presenting information that they learn or have learned. We normally have a topic, paper, book, or subject that we follow and take turns presenting the information we learn, or giving independent talks about our own research. If you have any questions or would like to be added to the email list, please feel free to email Matthew Lemoine (mlemo36@lsu.edu) or Krishnendu Kar (kkar2@lsu.edu).
Posted December 1, 2025
Control and Optimization Seminar Questions or comments?
9:30 am – 10:20 am Zoom (click here to join)
Jameson Graber, Baylor University
NSF CAREER Awardee
TBA
Posted November 15, 2025
Algebra and Number Theory Seminar Questions or comments?
2:00 pm – 3:00 pm Lockett 233 or click here to attend on Zoom
Olivia Beckwith, Tulane University
TBA
TBA
Posted November 22, 2025
Last modified November 23, 2025
Control and Optimization Seminar Questions or comments?
9:30 am – 10:20 am Zoom (click here to join)
Henk van Waarde, University of Groningen
IEEE L-CSS Outstanding Paper and SIAM SIAG/CST Prize Awardee
TBA
Posted December 29, 2025
Colloquium Questions or comments?
3:30 pm Lockett 232
R. Tyrrell Rockafellar, University of Washington
TBA
Posted December 31, 2025
Control and Optimization Seminar Questions or comments?
Time and Location To Be Announced (In Person and Telecast Live on Zoom)
R. Tyrrell Rockafellar, University of Washington
TBA
Posted December 17, 2025
Applied Analysis Seminar Questions or comments?
3:30 pm – 4:30 pm
Tuoc Phan, University of Tennessee–Knoxville
TBA
Posted November 26, 2025
Control and Optimization Seminar Questions or comments?
9:30 am – 10:20 am Zoom (click here to join)
Anthony Bloch, University of Michigan
AMS, IEEE, and SIAM Fellow
TBA
Posted December 7, 2025
Last modified December 28, 2025
Control and Optimization Seminar Questions or comments?
9:30 am – 10:20 am Zoom (click here to join)
Richard Vinter, Imperial College London
IEEE Fellow
Control of Lumped-Distributed Control Systems
Lumped-distributed control systems are collections of interacting sub-systems, some of which have finite dimensional vector state spaces (comprising ‘lumped’ components) and some of which have infinite dimensional vector state spaces (comprising ‘distributed’ components). Lumped-distributed control systems are encountered, for example, in models of thermal or distributed mechanical devices under boundary control, when we take the control actuator dynamics or certain kinds of dynamic loading effects into account. This talk will focus on an important class of (possibly non-linear) lumped-distributed control systems, in which the control action directly affects only the lumped subsystems and the output is a function of the lumped state variables alone. We will give examples of such systems, including a temperature-controlled test bed for measuring semiconductor material properties under changing temperature conditions and robot arms with flexible links. A key observation is an exact representation of the mapping from control inputs to outputs, in terms of a finite dimensional control system with memory. (We call it the reduced system representation.) The reduced system representation can be seen as a time-domain analogue of frequency response descriptions involving the transfer function from input to output. In contrast to frequency response descriptions, the reduced system representation allows non-linear dynamics, hard constraints on controls and outputs, and non-zero initial data. We report recent case studies illustrating the computational advantages of the reduced system representation. We show that, for related output tracking problems, computation methods based on the new representation offer significantly improved tracking and reduction in computation time, as compared with traditional methods, based on the approximation of infinite dimensional state spaces by high dimensional linear subspaces.
Posted November 15, 2025
Algebra and Number Theory Seminar Questions or comments?
2:00 pm – 3:00 pm Lockett 233 or click here to attend on Zoom
Marco Sangiovanni Vincentelli, Columbia University
TBA
TBA
Posted September 3, 2025
1:00 pm – 4:00 pm Saturday, March 7, 2026 Digital Media Center TheatreScientific Computing Around Louisiana (SCALA) 2026
Posted November 15, 2025
Algebra and Number Theory Seminar Questions or comments?
2:00 pm – 3:00 pm Lockett 233 or click here to attend on Zoom
Kiran Kedlaya, University of California, San Diego
TBA
TBA
Posted December 1, 2025
Control and Optimization Seminar Questions or comments?
9:30 am – 10:20 am Zoom (click here to join)
Khai Nguyen, North Carolina State University
TBA
Posted December 27, 2025
Control and Optimization Seminar Questions or comments?
9:30 am – 10:20 am Zoom (click here to join)
Aris Daniilidis, Technische Universität Wien
TBA