The spectra of lamplighter groups and Cayley machines
The spectra of lamplighter groups and Cayley machines
复制标题
点灯组和凯莱机的光谱
DOI:
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发表时间:
2004
期刊:
影响因子:
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通讯作者:
B. Steinberg
中科院分区:
文献类型:
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作者:
Mark Kambites;Pedro V. Silva;B. Steinberg
We calculate the spectra and spectral measures associated to random walks on restricted wreath products G wr $$mathbb{Z}$$, with G a finite group, by calculating the Kesten—von Neumann—Serre spectral measures for the random walks on Schreier graphs of certain groups generated by automata. This generalises the work of Grigorchuk and Żuk on the lamplighter group. In the process we characterise when the usual spectral measure for a group generated by an automaton coincides with the Kesten—von Neumann—Serre spectral measure.