I cant seem to find a answer for 20.7 anywhere. Unfourtantly, I do not have the skills to latex the problem out, so I only hope someone looks in the book.(adsbygoogle = window.adsbygoogle || []).push({});

My solution is that the supremum of the set of a_i 's must be finite above and the infinium is finite and greater then zero , and the b_i 's have no restraints.

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# Munkres text question.

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