Hypatian Seminar: Brie Finegold (University of Arizona), 'A Presentation of $SL(2,Z[i])$ in two different ways'

Event Date: 

Monday, March 11, 2013 - 3:30pm to 4:30pm

Event Location: 

  • 6635 South Hall

Event Contact: 

Maree Afaga Jaramillo

Email: maree@math.ucsb.edu

Abstract: I'll talk about a classical way from the 1960's to derive a presentation for the special linear group over the Gaussian integers by viewing it as a group acting on the Hyperbolic plane. Then I'll talk about my way to find a presentation of the group by viewing it as acting on a variation on the curve complex of a torus. The talk will be interactive and compare and contrast the two methods.