Formalising the local compactness of the adele ring

Fuente: arXiv
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Main Author: Mercuri, Salvatore
Format: Preprint
Published: 2024
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author Mercuri, Salvatore
author_facet Mercuri, Salvatore
contents The adele ring of a number field is a central object in modern number theory. Its status as a locally compact topological ring is one of the key reasons why. We describe a formal proof that the adele ring of a number field is locally compact implemented in the Lean 4 theorem prover. Our work includes the formalisations of new types, including the completion of a number field at an infinite place, the infinite adele ring and the finite $S$-adele ring, as well as formal proofs that completions of a number field are locally compact and that their rings of integers at finite places are compact.
format Preprint
id arxiv_https___arxiv_org_abs_2405_19270
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Formalising the local compactness of the adele ring
Mercuri, Salvatore
Logic in Computer Science
Number Theory
The adele ring of a number field is a central object in modern number theory. Its status as a locally compact topological ring is one of the key reasons why. We describe a formal proof that the adele ring of a number field is locally compact implemented in the Lean 4 theorem prover. Our work includes the formalisations of new types, including the completion of a number field at an infinite place, the infinite adele ring and the finite $S$-adele ring, as well as formal proofs that completions of a number field are locally compact and that their rings of integers at finite places are compact.
title Formalising the local compactness of the adele ring
topic Logic in Computer Science
Number Theory
url https://arxiv.org/abs/2405.19270