ZF/Zorn/next_bounded: deleted this proof, which was already in comments
ZF/Zorn/next_bounded: deleted this proof, which was already in comments

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle