Positive extensions of automorphisms of spin factors

Positive extensions of automorphisms of spin factors
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自旋因子自同构的正扩展

DOI:
10.1017/s0308210500016139
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发表时间:
1983
期刊:
Proceedings of the Royal Society of Edinburgh: Section A Mathematics
影响因子:
--
通讯作者:
A. Robertson
A. Robertson
中科院分区:
--
文献类型:
--
作者:
A. Robertson

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简介A自旋因子是I2型的JW因子。证明了有限维自旋因子的某些自同构推广到复矩阵代数上不可分解的极值正线性映射,从而不保持正锥的极值射线.
Synopsis A spin factor is a JW-factor of type I2. It is shown that certain automorphisms of finite dimensional spin factors extend to extremal positive linear maps on complex matrix algebras which are not decomposable, and hence, do not preserve extreme rays of the positive cone.