RANDOM WALKS ON FREE PERIODIC GROUPS
RANDOM WALKS ON FREE PERIODIC GROUPS
复制标题
自由周期群上的随机游走
DOI:
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发表时间:
1983
期刊:
影响因子:
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通讯作者:
S. I. Adyan
中科院分区:
文献类型:
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作者:
S. I. Adyan
An upper estimate is obtained for the growth exponent of the set of all uncancellable words equal to 1 in a group given by a system of defining relations with the Dehn condition. By a theorem of Grigorchuk, this yields a sufficient test for the transience of a random walk on a group given by a system of defining relations with the Dehn condition, and for the nonamenability of such a group. It is proved that the free periodic groups B(m,n) with m?2 and odd n?665 satisfy this test. A question asked by Kesten in?1959 is thereby answered in the negative, and a conjecture put foth earlier by the author is confirmed. Bibliography: 7 titles.