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arXiv · 1512.04195

Brown's lemma in second-order arithmetic

Emanuele Frittaion
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Abstract

We show that Brown's lemma is equivalent to Sigma02-induction over RCA0* and that the finite version of Brown's lemma is provable in RCA0 but not in RCA0*.

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Emanuele Frittaion. 2016-03-02. Brown's lemma in second-order arithmetic. https://arxiv.org/abs/1512.04195

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