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: Wednesday, April 08, 2009, 12:15 pm

Duration: This information is not available in the database

Location: CAB G51

Speaker: David Belius (Univ. of Cambridge)

Discrete Harmonic Analysis and the Divisible Sandpile

In the recent paper "Strong Spherical Asymptotics for Rotor-Router Aggregation and the Divisible Sandpile" by L. Levine and Y. Peres the authors prove shape results about a number of deterministic growth models, one of them being the Divisible Sandpile. The key idea in their paper is the rather surprising technique of applying the discrete equivalent of harmonic analysis to this almost combinatorial problem. In this talk I will introduce the Divisible Sandpile model and Discrete Harmonic Analysis, and describe how the latter can be applied to prove an important lemma about the former.

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