Abelian projections over a von Neumann subalgebra
نویسندگان
چکیده
منابع مشابه
Projections from a von Neumann algebra onto a subalgebra
— This paper is mainly devoted to the following question : let M, N be Von Neumann algebras with M C N. If there is a completely bounded projection P : N -^ M, is there automatically a contractive projection P : N -^ M? We give an affirmative answer with the only restriction that M is assumed semi-finite. The main point is the isometric identification of the complex interpolation space (AO, Ai ...
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ژورنال
عنوان ژورنال: Proceedings of the Japan Academy, Series A, Mathematical Sciences
سال: 1972
ISSN: 0386-2194
DOI: 10.3792/pja/1195519628