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Theorems · Theorem · combinatorics

Matroid.dual_contract_dual

∀ {α : Type u_1} (M : Matroid α) (X : Set α), (M✶.contract X)✶ = M.delete X
Defined in
Mathlib.Combinatorics.Matroid.Minor.Contract
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Foundations
Depth 82 from the axioms · uses propext, Classical.choice, Quot.sound
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Set · cited by 53352SetMatroid · cited by 1258MatroidMatroid.contract · cited by 103Matroid.contractMatroid.delete · cited by 86Matroid.deleteMatroid.dual · cited by 79Matroid.dualMatroid.dual_dual · cited by 22Matroid.dual_dualMatroid.dual_contract · cited by 9Matroid.dual_contractMatroid.dual_contract_dualCITED BYCITES

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