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upperHemicontinuous_iff_isClosed_compl_preimage_Iic_compl
Modification history
2025-12-17 18:54
Mathlib/Topology/Semicontinuity/Hemicontinuity.lean
refactor: generalize semicontinuity (#32521) …
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upperHemicontinuous_iff_isClosed_compl_preimage_Iic_compl
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