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Theorems · Theorem · logic and foundations

Set.Countable.of_diff

Deprecated since 2026-06-03Use Set.Countable.of_sdiff instead.

∀ {α : Type u} {s t : Set α}, (s \ t).Countable → t.Countable → s.Countable

Alias of Set.Countable.of_sdiff.

Defined in
Mathlib.Data.Set.Countable
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Foundations
Depth 79 from the axioms · uses propext, Classical.choice, Quot.sound
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Set · cited by 53352SetSet.Countable · cited by 545Set.CountableSet.Countable.of_sdiff · cited by 4Countable.of_sdiffCountable.of_diffCITED BYCITES

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