A Galois type theorem in von Neumann algebras
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- by Hisashi Choda PDF
- Proc. Amer. Math. Soc. 115 (1992), 415-417 Request permission
Abstract:
We shall give a simple proof for a Galois type theorem: Let $\alpha$ be a dual free action of a discrete group ${\text {G}}$ on a factor $M$. If an automorphism $\theta$ of $M$ leaves the fixed point algebra ${M^\alpha }$ pointwise invariant then there exists a ${g_0} \in G$ with $\theta = {\alpha _{{g_0}}}$.References
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Additional Information
- © Copyright 1992 American Mathematical Society
- Journal: Proc. Amer. Math. Soc. 115 (1992), 415-417
- MSC: Primary 46L55; Secondary 46L40
- DOI: https://doi.org/10.1090/S0002-9939-1992-1081090-8
- MathSciNet review: 1081090