## Welcome to the AGNT Seminar at Rice!

## Fall 2021

AG Group, 423 HBH, 3:30pm - 4:30pm, Details [here]

QA Group, 427 HBH, 3:00pm - 4:00pm, Details [here]

August 25, 2021 : Learning Groups [in-person]- see above

September 1, 2021 : AG Speaker [in-person]

Tony Várilly-Alvarado, Rice University

__Title__: Rational surfaces and locally recoverable codes

__Abstract__: Motivated by large-scale storage problems around data loss, a budding branch of coding theory has surfaced in the last decade or so, centered around locally recoverable codes. These codes have the property that individual symbols in a codeword are functions of other symbols in the same word. If a symbol is lost (as opposed to corrupted), it can be recomputed, and hence a code word can be repaired. Algebraic geometry has a role to play in the design of codes with locality properties. In this talk I will explain how to use algebraic surfaces birational to the projective plane to both reinterpret constructions of optimal codes already found in the literature, and to find new locally recoverable codes, many of which are optimal (in a suitable sense). This is joint work with Cecília Salgado and Felipe Voloch.

September 8, 2021 : Learning Groups - see above

September 15, 2021 : QA Speaker [in-person]

Sean Sanford, Indiana University

__Title__: Fusion Categories over Non–Algebraically Closed Fields

__Abstract__: Much of the early work on Fusion Categories was inspired by physicists desire for rigorous foundations of topological quantum field theory. One effect of this was that base fields other than the complex numbers were rarely considered, if at all. The relevant features of $\mathbb C$ that make the theory work are the fact that it is characteristic zero, and algebraically closed. This talk will focus on the interesting things that can be found when the algebraically closed requirement is removed. The content will be introductory, with lots of examples.

September 22, 2021 : Learning Groups - see above

September 29, 2021 : AG Speaker [in-person]

Alex Barrios, Carleton College

__Title__:TBA

October 6, 2021 : Learning Groups - see above

October 13, 2021 : QA Speaker [online]

Zachary Dell, Ohio State University

__Title__: TBA

October 20, 2021 : Learning Groups - see above

October 27, 2021 : AG Speaker [in-person]

Elisa Bellah, University of Oregon

__Title__: TBA

November 3, 2021 : Learning Groups - see above

November 10, 2021 : QA Speaker [online]

Agustina Czensky, University of Oregon

__Title__: TBA

November 17, 2021 : Learning Groups - see above

November 24, 2021 : (no activity)

December 1, 2021 : AG Speaker [online]

Humberto Diaz, Washington University

__Title__: TBA

December 8, 2021 : QA Speaker [online]

Florencia Orosz, University of Denver

__Title__: TBA