Matroid.IsBase.exchange_isBase_of_indep

∀ {α : Type u_1} {M : Matroid α} {B : Set α} {e f : α},
  M.IsBase B → f ∉ B → M.Indep (insert f (B \ {e})) → M.IsBase (insert f (B \ {e}))

Defined in: Mathlib.Combinatorics.Matroid.Basic
Cited by: 3 results in Mathlib
Foundations: Depth 101 from the axioms · uses propext, Classical.choice, Quot.sound

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