On the entropy in II1 von Neumann algebras
On the entropy in II1 von Neumann algebras
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关于 II1 冯诺依曼代数中的熵
DOI:
10.1017/s0143385700001358
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发表时间:
1981
影响因子:
0.9
通讯作者:
O. Besson
中科院分区:
文献类型:
--
作者:
O. Besson
Abstract Let α be an automorphism of a finite von Neumann algebra and let H(α) be its Connes-Størmer's entropy. We show that H(α) = 0 if α is the induced automorphism on the crossed product of a Lebesgue space by a pure point spectrum transformation. We also show that H is not continuous in α and we compute H(α) for some α.