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Theorem cardinal.is_limit.ne_zero

Modification history

2023-04-03 08:02
src/set_theory/cardinal/cofinality.lean
refactor(set_theory/cardinal/basic): redefine `cardinal.is_limit` in terms of `is_succ_limit` (#18523) …
Deleted cardinal.is_limit.ne_zeroView on Github →
2022-06-04 21:21
src/set_theory/cardinal/cofinality.lean
feat(set_theory/cardinal/cofinality): basic lemmas on limit cardinals (#14439)
Added cardinal.is_limit.ne_zeroView on Github →