Mathlib v3 is deprecated. Go to Mathlib v4

Theorem set.ssubset_def

Modification history

2022-02-02 14:51
src/data/set/basic.lean
feat(order/rel_classes): Unbundled typeclass to state that two relations are the non strict and strict versions (#11381) …
Modified set.ssubset_defView on Github →
2020-01-09 22:58
src/data/set/basic.lean
refactor(data/set/basic): change def of `⊂` to match `<` (#1862)
Modified set.ssubset_defView on Github →
2017-12-06 13:30
data/set/basic.lean
feature(.): add various theorems
Modified set.ssubset_defView on Github →
2017-07-23 18:07
data/set/basic.lean
refactor(algebra/lattice): use *experiment files, move set.lattice to .basic
Modified set.ssubset_defView on Github →
2017-07-23 15:16
data/set/lattice.lean
refactor(*): import content from lean/library/data and library_dev
Added set.ssubset_defView on Github →