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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