SetRel.core_union_subset

∀ {α : Type u_1} {β : Type u_2} {R : SetRel α β} {t₁ t₂ : Set β}, R.core t₁ ∪ R.core t₂ ⊆ R.core (t₁ ∪ t₂)

Defined in: Mathlib.Data.Rel
Cited by: 0 results in Mathlib
Foundations: Depth 58 from the axioms · uses propext, Classical.choice, Quot.sound

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