Matroid.IsBasis.isBasis_of_isBasis_of_subset_of_subset

∀ {α : Type u_1} {M : Matroid α} {I X Y J : Set α}, M.IsBasis I X → M.IsBasis J Y → J ⊆ X → I ⊆ Y → M.IsBasis I Y

Defined in: Mathlib.Combinatorics.Matroid.Minor.Restrict
Cited by: 1 results in Mathlib
Foundations: Depth 83 from the axioms · uses propext, Classical.choice, Quot.sound

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