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math.LO2026
Avoiding logical strength in real analysis
Anton Freund, Nicholas Pischke, Patrick Uftring
In reverse mathematics, real numbers are traditionally represented by Cauchy sequences with a given rate of convergence. We work without rates and speak of slow Cauchy sequences. I…
math.LO2024
More conservativity for weak Kőnig's lemma
Anton Freund, Patrick Uftring
We prove conservativity results for weak Kőnig's lemma that extend the celebrated result of Harrington (for -statements) and are somewhat orthogonal to the extension by Simp…