On the closedness of the sum of n subspaces of a Hilbert space
classification
🧮 math.FA
keywords
subspacesclosedhilbertspaceclosednessconditionsgiven-tuples
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We give necessary and sufficient conditions for the sum of n subspaces of a Hilbert space to be closed. We also present various properties of n-tuples of subspaces with closed sum.
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