Department of Computer Science | Institute of Theoretical Computer Science | CADMO

Theory of Combinatorial Algorithms

Prof. Emo Welzl and Prof. Bernd Gärtner

Mittagsseminar (in cooperation with M. Ghaffari, A. Steger and B. Sudakov)

Mittagsseminar Talk Information

Date and Time: Thursday, June 05, 2014, 12:15 pm

Duration: 30 minutes

Location: CAB G51

Speaker: Michelle Delcourt (University of Illinois at Urbana-Champaign)

Infinite Families of Ramanujan Hypergraphs

Constructing large families of Ramanujan graphs, expander graphs which are "optimal" from a spectral point of view, has been an important problem with many applications in computer science and engineering. Known constructions are fairly simple but rely heavily on group theory and number theory. In this talk, we will briefly touch on results from a breakthrough paper by Marcus, Spielman, and Srivastava, which uses combinatorial methods, and use this work to construct large families of Ramanujan hypergraphs.


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