Analysis on Graphs and Fractals

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Cardiff University: 29 May - 2 June, 2007

   

Self-similar graphs arising from groups

L Bartholdi, IEPFL, IGAT, Lausanne, Switzerland

Abstract

I will present computations of spectra arising from self-similar groups. Some of these graphs converge, when scaled appropriately, to the Julia set of a rational map. Others seem related to the theory of random matrices; I will explain which group-theoretical consequences such results would have. Part of the results I will present are joint work with R. Grigorchuk.