Commit 2024-09-05 23:22 ad40d932
View on Github →chore(TopologicalSpace.Opens): introduce Opens.inclusion
(#16513)
Currently we use Set.inclusion
to construct functions between Opens
. This is a form of defeq abuse which is exposed by leanprover/lean4#5020. In this PR, we introduce Opens.inclusion
and replace uses of Set.inclusion
with it to avoid passing through a coercion to Set
. Since there is a version, not analogous to Set.inclusion
, squatting on this name we rename it to Opens.inclusion'
.