I know sup(AB) = sup(A)sup(B) if A and B are nonnegative, but what if the assumption is dropped that A and B are nonnegative. Does this change the answer?

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- September 18th 2013, 09:30 AM #1

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- September 18th 2013, 09:58 AM #2

- September 18th 2013, 12:03 PM #3

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