Matroid.contract_eq_contract_iff

∀ {α : Type u_1} {M : Matroid α} {C₁ C₂ : Set α}, M.contract C₁ = M.contract C₂ ↔ C₁ ∩ M.E = C₂ ∩ M.E

Defined in: Mathlib.Combinatorics.Matroid.Minor.Contract
Cited by: 2 results in Mathlib
Foundations: Depth 82 from the axioms · uses propext, Classical.choice, Quot.sound

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