Theorems · Theorem · combinatorics
Matroid.contract_ground_subset_ground
∀ {α : Type u_1} (M : Matroid α) (C : Set α), (M.contract C).E ⊆ M.E- Cited by
- 0 results in Mathlib
- Foundations
- Depth 81 from the axioms · uses propext, Classical.choice, Quot.sound
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Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- Setstatement and proof · cited by 53,352
- Matroidstatement and proof · cited by 1,258
- Matroid.Estatement · cited by 550
- Set.sdiff_subsetproof · cited by 156
- Matroid.contractstatement · cited by 103
- Eq.trans_subsetproof · cited by 16
- Matroid.contract_groundproof · cited by 12
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