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Commit 2021-12-20 13:27 ab654e5c

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feat(topology/sober): Specialization & generic points & sober spaces (#10914)

Estimated changes

added theorem closed_embedding.sober
added def generic_point
added theorem generic_point_closure
added theorem generic_point_spec
added theorem is_generic_point.def
added theorem is_generic_point.eq
added theorem is_generic_point.image
added theorem is_generic_point.mem
added def is_generic_point
added theorem is_generic_point_def
added theorem open_embedding.sober
added theorem sober_of_open_cover
added theorem specializes.eq
added theorem specializes.map
added theorem specializes.trans
added def specializes
added theorem specializes_antisymm
added theorem specializes_def
added theorem specializes_iff_eq
added theorem specializes_refl
added theorem specializes_rfl