Mathlib v3 is deprecated. Go to Mathlib v4

Commit 2019-09-17 02:44 d4cc1790

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feat(logic/basic): eq_iff_eq_cancel (#1447)

  • feat(logic/basic): eq_iff_eq_cancel These lemmas or not meant for rw but to be applied, as a sort of congruence lemma.
  • State lemmas as iff
  • Make'm simp

Estimated changes