Geometry & Geometric Analysis Seminar
The Geometry and Geometric Analysis (GAGA) Seminar is an opportunity for geometers, topologists, and others from TCU and other campuses to learn about new topics of mutual interest. GAGA meets most weeks during the school year. You can find notes from past talks at the GAGA Note Repository, located in a secure off-campus location.
The Fall 2025 - Spring 2026 GaGA seminar is Tuesdays at 4 pm in TUC 352 on TCU campus, and also the seminar will be available on zoom. Contact Ken Richardson for the link.
Note there will be no GaGA seminar on March 17 (Spring Break) or on March 24 (we have
a colloquium).
Next GaGA talk: March 10, 31, 2026: Loren Spice (TCU)
Title: Kac–Moody algebras, loop algebras, and central extensions, oh my!
Abstract: We will try to understand the many objects in the title and the relationships among
them. The literature on this subject seems to be split into the mathematics, which
proceeds on the basis of unmotivated definitions, and the physics, which is motivated
by, well, physics. Since I don't understand physics, for now we're going to proceed
mostly on the basis of the abstract definitions, but, as this sequence continues,
I am going to try to learn about at least the connections among the definitions, and
discuss them more in future talks.