question about idempotent operators

Asked May 19 '13 at 05:05

Active May 19 '13 at 07:19

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Let $H$ be a Hilbert space and $\dim(H)=\infty$. If each $T\in B(H)$ is finite sum of idempotent operators? If each $T\in B(H)$ is infinite sum of idempotent operators?

edited May 19 '13 at 07:19

Srijan

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asked May 19 '13 at 05:05

Zhonghua Wang

Can you edit your question to include a question? – Sammy Black May 19 '13 at 07:33

question about idempotent operators

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