Mathlib v3 is deprecated. Go to Mathlib v4

Theorem not_imp_not

Modification history

2020-08-17 13:59
src/logic/basic.lean
refactor(logic/basic): classical -> root, root -> decidable (#3812) …
Modified not_imp_notView on Github →
2017-09-03 20:55
logic/basic.lean
refactor(logic/basic): refactor logic theorems
Added not_imp_notView on Github →