Representation of free Herglotz functions
Representation of free Herglotz functions
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自由 Herglotz 函数的表示
DOI:
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发表时间:
2016
影响因子:
1.1
通讯作者:
R. Tully
中科院分区:
文献类型:
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作者:
J. Pascoe;Benjamin Passer;R. Tully
A Herglotz function is a holomorphic map from the open complex unit disk into the closed complex right halfplane. A classical Herglotz function has an integral representation against a positive measure on the unit circle. We prove a free analytic analogue of the Herglotz representation over exact $C^*$-algebras, and describe how our representations specialize to the free probabilistic case. We also show that, regardless of the $C^*$-algebra, the set of representable Herglotz functions must be closed in a natural topology.