Lemma 5.1 (Brualdi), p. 6 — two bases $A, B$ admit a bijection $\pi : A \to B$ with $A - x + \pi(x)$ a base for all $x \in A$

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Lemma 5.1 (Brualdi), p. 6 — two bases $A, B$ admit a bijection $\pi : A \to B$ with $A - x + \pi(x)$ a base for all $x \in A$ · Prove2Me