Mathlib v3 is deprecated. Go to Mathlib v4

Theorem and_congr_left'

Modification history

2022-02-04 06:54
src/logic/basic.lean
feat(logic/basic): add projection notation for iff (#11803)
Modified and_congr_left'View on Github →
2021-01-27 18:19
src/logic/basic.lean
refactor(data/set/basic): simpler proofs (#5920) …
Added and_congr_left'View on Github →