Today we are happy to welcome Michelle Chu back. She is stopping by here before going off to redbud this weekend.
Also, today after seminar we can organize redbud travel as best as possible.
Title: Coxeter groups, arithmetic reflection groups, and Vinberg’s algorithm
Speaker: Michelle Chu, UCSB
Date: Apr 23, 2019
Time: 3:30 PM
Room: MSCS 509
Abstract: Coxeter groups and arithmetic reflection groups are broad classes of groups relevant to the study of hyperbolic manifolds. To make this connection more concrete we can build a fundamental domain for a hyperbolic reflection group using Vinberg’s algorithm. In this expository talk I will introduce and discuss these ideas, which will serve to give some of the important background for my talk at Redbud later in the week.
______________________
Neil R. Hoffman
Assistant Professor
Department of Mathematics
523 Math Science Building
Oklahoma State University
Stillwater, OK 74078-1058
405-744-7791
http://math.okstate.edu/people/nhoffman
Hello everyone,
Today we are very happy to have Birch speaking in seminar. His title and abstract are below.
Also, we have two more talks this semester. Michelle Chu from UCSB next week and Hailey Bodiford in three weeks.
Title: Prime Decomposition of Surfaces by Crushing
Speaker: Birch Bryant, Oklahoma State University
Date: Apr 16, 2019
Time: 3:30 PM
Room: MSCS 5109
Abstract: Joint project with William Jaco. Following the steps for the prime decomposition of 3-manifolds laid out in the Jaco & Rubinstein paper “0- Efficient Triangulations of 3- Manifolds” we construct the analogous (and well known) result for surfaces. That being the torus and real projective plane are the prime surfaces with respect to the connect sum operation on surfaces. Further the decomposition of surfaces into prime elements can be written uniquely up to homeomorphism.
______________________
Neil R. Hoffman
Assistant Professor
Department of Mathematics
523 Math Science Building
Oklahoma State University
Stillwater, OK 74078-1058
405-744-7791
http://math.okstate.edu/people/nhoffman
Today, I will be speaking in topology.
Title: Restricting covers and symmetries of Dehn fillings
Speaker: Neil Hoffman, Oklahoma State University
Date: Apr 2, 2019
Time: 3:30 PM
Room: MSCS 509
Abstract: This talk will focus on the thick/thin decomposition of hyperbolic 3-manifolds and 3-orbifolds. I will describe how it relates to joint work in progress with Millichap and Worden.
______________________
Neil R. Hoffman
Assistant Professor
Department of Mathematics
523 Math Science Building
Oklahoma State University
Stillwater, OK 74078-1058
405-744-7791
http://math.okstate.edu/people/nhoffman
