Commit 2024-09-05 23:22 ad40d932

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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'.

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