MenuEvents for 10/29/2019 from all calendars
Postdoc Lunch Time Talks
Time: 12:55PM - 1:15PM
Location: BLOC 220
Speaker: Hao Guo, Texas A&M University
Description:
Title: Coarse geometry and quantization
Abstract: I will give an overview of some recent joint work with Peter Hochs and Mathai Varghese at the University of Adelaide on the formulation of a spin-c quantization map in the language of coarse geometry. The quantization map we define is a maximal equivariant analogue of the localized index map of John Roe. The advantage of working in the maximal setting is that it allows one to compose the quantization map with the reduction map of Mathai-Zhang. As a consequence, I will state a version of Guillemin and Sternberg’s quantization commutes with reduction principle for equivariant spin-c Callias-type operators.
Postdoc Lunch Time Talks
Time: 1:20PM - 1:40PM
Location: BLOC 220
Speaker: Hang Huang, Texas A&M University
Description:
Title: Equations and Syzygies of Projective Variety Defined by Parametrizations
Abstract: In real life, a lot of varieties we are interested in are given by explicit parametrizations. In many cases, it is very useful, although very difficult, to compute the equations and syzygies of these varieties explicitly. I will discuss some examples that this could be done and indicate a powerful but limited technique of how to compute them.
Postdoc Lunch Time Talks
Time: 1:45PM - 2:05PM
Location: BLOC 220
Speaker: Jianchao Wu, Texas A&M University
Description:
Title: Crossed product C*-algebras, K-theory, and applications
Abstract: I will outline the construction of crossed product C*-algebras and indicate how the study of their analytical properties and K-theory is relevant in dynamics, topology, geometry, and mathematical physics.
Student Working Seminar in Algebra and Geometry
Time: 4:00PM - 5:00PM
Location: BLOC 628
Speaker: Arpan Pal, Texas A&M University
Title: Lang's Algebra; Chapter XV, Sections 9-11
Student Working Seminar in Category Theory
Time: 5:00PM - 6:00PM
Location: BLOC 506A
Speaker: Byeongsu Yu
Title: Universal property and Category of element. (Riehl 2.3~2.4)
Abstract: We will show that the universal property, which is called an abstract nonsence, stems from the initial element of special category named the category of element. The category of element is a special case of comma category. Then, the universal object of the category element gives the universal property of some specific construction.
