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How do we define trace of an infinite dimensional space? How one can compute the trace of an infinite dimensional matrix?

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en.wikipedia.org/wiki/Trace-class_operator – Ian Morris Nov 14 2011 at 20:35
Since I'm casting the final vote to close, a word of explanation: MathOverflow is intended for research-level questions, and your question, while natural, would belong better on math.stackexchange.com which is intended for a broader range of questions in mathematics. – Yemon Choi Nov 14 2011 at 22:10

closed as off topic by Dan Petersen, Pietro Majer, S. Sra, Alain Valette, Yemon Choi Nov 14 2011 at 22:10

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Start with

trace class operators

nuclear operators

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