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# Questions

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### Does equality of the operator norm and the cb norm for every bimodule map over a C*-subalgebra imply that the subalgebra is matricially norming?

mar 27 11 at 14:22 MathOverflow 123

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### Must we close weakly to apply the spectral theorem?

may 12 10 at 21:41 Jonas Meyer 4,82212131

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### What is the “Krein-Milman theorem for cones”?

may 9 10 at 6:55 Jonas Meyer 4,82212131

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### Did Gelfand’s theory of commutative Banach algebras influence algebraic geometers?

apr 4 10 at 8:21 KConrad 16.9k361117

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