Mathlib v3 is deprecated. Go to Mathlib v4

Theorem set.sub_preimage_iff

Modification history

2018-08-28 19:40
data/set/basic.lean
feat(order/filter): More lemmas from perfectoid project (#289)
Deleted set.sub_preimage_iffView on Github →
2018-08-28 17:33
data/set/basic.lean
feat(data/set/basic): some more basic set lemmas (#288)
Added set.sub_preimage_iffView on Github →