Upper bounds for every chain force a maximal element.Suggest a slogan
If \(P\) is a poset in which every chain has an upper bound in \(P\), then \(P\) has a maximal element.
Zorn's lemma
T-V7JRG
T-V7JRG
If \(P\) is a poset in which every chain has an upper bound in \(P\), then \(P\) has a maximal element.