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Theorems · Theorem · combinatorics

Matroid.dual_contract_delete

∀ {α : Type u_1} (M : Matroid α) (X Y : Set α), ((M.contract X).delete Y)✶ = (M✶.delete X).contract Y
Defined in
Mathlib.Combinatorics.Matroid.Minor.Contract
Cited by
1 results in Mathlib
Foundations
Depth 82 from the axioms · uses propext, Classical.choice, Quot.sound
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Matroid.IsBasis.contract_eq_contract_delete · cited by 3IsBasis.contract_eq_contr…Set · cited by 53352SetMatroid · cited by 1258MatroidMatroid.contract · cited by 103Matroid.contractMatroid.delete · cited by 86Matroid.deleteMatroid.dual · cited by 79Matroid.dualMatroid.dual_contract · cited by 9Matroid.dual_contractMatroid.dual_delete · cited by 5Matroid.dual_deleteMatroid.dual_contract_deleteCITED BYCITES

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Cited by1

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