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Activity

Mathematics Colloquium

Date:
Time:
4:00 pm – 4:50 pm
Avery Hall Room: 115
1144 T St
 Lincoln NE 68508
Additional Info: AVH
Contact:
Steven Cohn, (402) 472-7223, scohn1@unl.edu
Speaker: Jonathan Brown
Affiliation: University of Dayton
Local Host: David Pitts
Title: Groupoid rings and Leavitt path algebras

Additional Public Info:
Leavitt path algebras were introduced as algebraic analogues
of graph C*-algebras. Over the past decade they have been remarkably
successful in providing examples of rings with interesting properties.
Graph C*-algebras are well known to be examples of groupoid C*-algebras
and groupoid methods have been successfully employed to gain insight
into the structure of them. Inspired by this success, Steinberg (2010)
and Clark, Farthing, Sims and Tomforde (2014) independently introduced
groupiod algebras (now known as Steinberg algebras). A groupoid is a
generalization of a group in which multiplication is only partially
defined and then the Steinberg algebra is the natural generalization of
the group algebra. In this talk I will introduce Steinberg algebras,
characterized their center (Steinberg 2010) and show when they are
simple (Brown, Clark, Farthing, Sims 2014) .

Refreshments will be served 3:30-4:00 in 348 Avery. The talk is free and open to the public.

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