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Nice explanation. Another interesting point is that in some cases there may be infinitely many ESTs, even if the sum is finite. For example, if we take the set
by c1ccccc1 6y ago
Nice explanation. Another interesting point is that in some cases there may be infinitely many ESTs, even if the sum is finite. For example, if we take the set {2^n}U{3*2^n}.
- ColinWright 6y agoThank you. Yes, as you say, the "unbounded sum" condition is sufficient, but not necessary. An example that's obvious "by inspection" is just to take an EST for every value of 2^n ... so take (2^n), (2^n)+1, and (2^n)+2.