Module tensor product of subnormal modules need not be subnormal
نویسندگان
چکیده
منابع مشابه
Jointly Hyponormal Pairs of Commuting Subnormal Operators Need Not Be Jointly Subnormal
We construct three different families of commuting pairs of subnormal operators, jointly hyponormal but not admitting commuting normal extensions. Each such family can be used to answer in the negative a 1988 conjecture of R. Curto, P. Muhly and J. Xia. We also obtain a sufficient condition under which joint hyponormality does imply joint subnormality.
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ژورنال
عنوان ژورنال: Journal of Functional Analysis
سال: 2017
ISSN: 0022-1236
DOI: 10.1016/j.jfa.2017.02.006