Every exponential group supports a positive harmonic function
Every exponential group supports a positive harmonic function
复制标题
每个指数群都支持正调和函数
DOI:
--
复制
发表时间:
2017
影响因子:
1
通讯作者:
G. Kozma
中科院分区:
文献类型:
--
作者:
Gideon Amir;G. Kozma
We prove that all groups of exponential growth support non-constant positive harmonic functions. In fact, out results hold in the more general case of strongly connected, finitely supported Markov chains invariant under some transitive group of automorphisms for which the directed balls grow exponentially.