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CategoryTheory.PreGaloisCategory.not_initial_iff_fiber_nonempty
Modification history
2024-02-08 20:07
Mathlib/CategoryTheory/Galois/Basic.lean
feat(CategoryTheory/Galois): characterisation of connected finite `G`-sets (#10228) …
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CategoryTheory.PreGaloisCategory.not_initial_iff_fiber_nonempty
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