Mathlib v3 is deprecated. Go to Mathlib v4

Theorem set.union_subset_union

Modification history

2021-01-27 18:19
src/data/set/basic.lean
refactor(data/set/basic): simpler proofs (#5920) …
Modified set.union_subset_unionView on Github →
2018-07-16 20:46
data/set/basic.lean
feat(data/set/basic): more set theorems, normalize naming
Modified set.union_subset_unionView on Github →
2017-07-23 18:07
data/set/basic.lean
refactor(algebra/lattice): use *experiment files, move set.lattice to .basic
Modified set.union_subset_unionView on Github →
2017-07-23 15:16
data/set/lattice.lean
refactor(*): import content from lean/library/data and library_dev
Added set.union_subset_unionView on Github →