Give an example to show that it is not true ,ingeneral ,that : sup(AB)=sup(A)sup(B) and inf (AB)=inf(A)inf(B)
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Hint for the first one:
Also consider and .
Originally Posted by Bruno J. hint But that depends upon how is defined. If it is defined by then How is defined?
Originally Posted by flower3 Give an example to show that it is not true ,ingeneral ,that : sup(AB)=sup(A)sup(B) and inf (AB)=inf(A)inf(B) How about ?
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