Home /  Workshop /  Schedules /  Determinants, Pfaffians, symmetric quivers, and symmetric varieties

Determinants, Pfaffians, symmetric quivers, and symmetric varieties

Recent Developments in Commutative Algebra April 15, 2024 - April 19, 2024

April 16, 2024 (02:00 PM PDT - 03:00 PM PDT)
Speaker(s): Jenna Rajchgot (McMaster University)
Location: SLMath: Eisenbud Auditorium, Online/Virtual
Primary Mathematics Subject Classification No Primary AMS MSC
Secondary Mathematics Subject Classification No Secondary AMS MSC
Video

Determinants, Pfaffians, symmetric quivers, and symmetric varieties

Abstract

Type A quiver loci are a class of generalized determinantal varieties. Special cases include classical determinantal varieties and varieties of complexes. Since the 1980s, mathematicians have found connections between these quiver loci and Schubert varieties in type A flag varieties. These connections were used to gain insights into commutative-algebraic properties of type A quiver loci (e.g., singularities, Hilbert series).  

In this talk, I will motivate and recall some of this story. I will then discuss the related setting of H. Derksen and J. Weyman's symmetric quivers and their representation varieties. Special cases include varieties defined by minors (or Pfaffians) of symmetric and skew-symmetric matrices. I will show how one can unify the study of commutative-algebraic properties of finite type symmetric quiver representation varieties with corresponding properties for Borel orbit closures in symmetric varieties G/K (G = general linear group, K = orthogonal or symplectic subgroup). Finally, I will provide some commutative-algebraic consequences.

This is joint work with Ryan Kinser and Martina Lanini. 

Supplements No Notes/Supplements Uploaded
Video/Audio Files

Determinants, Pfaffians, symmetric quivers, and symmetric varieties

Troubles with video?

Please report video problems to itsupport@slmath.org.

See more of our Streaming videos on our main VMath Videos page.