(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

If sup A<sup B, then show that there exists an element b[tex]\in[/tex]B that is an upper bound for A.

2. Relevant equations

3. The attempt at a solution

This one is really frustrating me. I'm having trouble even beginning.

I know sup A implies s[tex]\leq[/tex]b where c is an upper bound for A.

Similarily sup B implies s[tex]\leq[/tex] d where d is an upper bound for B.

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# Homework Help: Sup A < sup B

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