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Theorems · Theorem · combinatorics

Finset.insert_subset_iff

∀ {α : Type u_1} [inst : DecidableEq α] {s t : Finset α} {a : α}, insert a s ⊆ t ↔ a ∈ t ∧ s ⊆ t
Defined in
Mathlib.Data.Finset.Insert
Cited by
14 results in Mathlib
Foundations
Depth 57 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
DecidableEq

Around this declaration

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Cites1

Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.

  • Finsetstatement and proof · cited by 13,712

Cited by14

Results whose statement or proof uses this declaration.