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Theorems · Theorem · combinatorics

Matroid.contract_delete_diff

Deprecated since 2026-06-03Use Matroid.contract_delete_sdiff instead.

∀ {α : Type u_1} (M : Matroid α) (C D : Set α), (M.contract C).delete D = (M.contract C).delete (D \ C)

Alias of Matroid.contract_delete_sdiff.

Defined in
Mathlib.Combinatorics.Matroid.Minor.Contract
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Foundations
Depth 83 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.contract_delete_sdiff · cited by 2Matroid.contract_delete_s…Matroid.contract_delete_diffCITED BYCITES

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