Special Seminar

Title: Farey, Ford, and PSL_2(Z)
Speaker: Alice Mark
Speaker Info: Arizona State University
Brief Description:
Special Note:

My aim with this talk is to explain a connection between the lattice PSL_2(Z) of PSL_2(R), Ford circles, and Pythagorean triples. Along the way, I'll talk about the classification of isometries of the hyperbolic plane, and say a little bit about discrete group actions. Time permitting, I will talk about how an analogous picture in the complex hyperbolic plane was used in some recent work of myself and Julien Paupert to find presentations for complex hyperbolic lattices.
Date: Friday, February 09, 2018
Time: 3:00pm
Where: Lunt 107
Contact Person: Ben Weinkove
Contact email: weinkove@math.northwestern.edu
Contact Phone:
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