January 28, 2014
4:30PM - 5:30PM
Cockins Hall 240
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2014-01-28 17:30:00
2014-01-28 18:30:00
Zassenhaus Lecture 2 - Alex Lubotzky
Title: From Ramanujan Graphs to Ramanujan ComplexesSpeaker: Alex Lubotzky, Einstein Institute of MathematicsAbstract: Ramanujan graphs are optimal expanders from spectral point of view. Their explicit constructions in the 80's used the works of Deligne and Drinfeld on the so called Ramanujan conjecture for GL(2) in the theory of automorphic forms. The extension of these works by Lafforgue to GL(n) (for which he got the Fields Medal in 2002) opened the door for constructions of high dimensional versions. These complexes will be described as well as their applications. Zassenhaus Poster 2014
Cockins Hall 240
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Add to Calendar
2014-01-28 16:30:00
2014-01-28 17:30:00
Zassenhaus Lecture 2 - Alex Lubotzky
Title: From Ramanujan Graphs to Ramanujan ComplexesSpeaker: Alex Lubotzky, Einstein Institute of MathematicsAbstract: Ramanujan graphs are optimal expanders from spectral point of view. Their explicit constructions in the 80's used the works of Deligne and Drinfeld on the so called Ramanujan conjecture for GL(2) in the theory of automorphic forms. The extension of these works by Lafforgue to GL(n) (for which he got the Fields Medal in 2002) opened the door for constructions of high dimensional versions. These complexes will be described as well as their applications. Zassenhaus Poster 2014
Cockins Hall 240
Department of Mathematics
math@osu.edu
America/New_York
public
Title: From Ramanujan Graphs to Ramanujan Complexes
Speaker: Alex Lubotzky, Einstein Institute of Mathematics
Abstract: Ramanujan graphs are optimal expanders from spectral point of view. Their explicit constructions in the 80's used the works of Deligne and Drinfeld on the so called Ramanujan conjecture for GL(2) in the theory of automorphic forms. The extension of these works by Lafforgue to GL(n) (for which he got the Fields Medal in 2002) opened the door for constructions of high dimensional versions. These complexes will be described as well as their applications.
