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Theorems · Theorem · logic and foundations

Set.ssubset_union_left_iff

∀ {α : Type u} {s t : Set α}, s ⊂ s ∪ t ↔ ¬t ⊆ s
Defined in
Mathlib.Data.Set.Basic
Cited by
0 results in Mathlib
Foundations
Depth 21 from the axioms · uses propext, Quot.sound

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  • Setstatement and proof · cited by 53,352
  • left_lt_supproof · cited by 7

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