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arXiv · 2607.25511

Hypernatural numbers in arithmetic Ramsey theory

Mauro Di Nasso
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Abstract

The hypernatural numbers ${}^*\mathbb{N}$ of nonstandard analysis have recently proven to be an effective tool in arithmetic Ramsey theory. After introducing the fundamental ``nonstandard" notions, we present several examples to illustrate the use of this technique in practice. In particular, we provide brief nonstandard proofs of some recent results concerning the monochromaticity of certain families of finite and infinite configurations.

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Mauro Di Nasso. 2026-07-28. Hypernatural numbers in arithmetic Ramsey theory. https://arxiv.org/abs/2607.25511

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