A note on the invariants of the $L$-functions

Fuente: arXiv
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Main Authors: Kaczorowski, Jerzy, Perelli, Alberto
Format: Preprint
Published: 2026
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author Kaczorowski, Jerzy
Perelli, Alberto
author_facet Kaczorowski, Jerzy
Perelli, Alberto
contents We explain the exact meaning of a statement we made in a previous paper on invariants, namely that a complex-valued function of the data of the functional equation of an $L$-function is an invariant if and only if it is stable under the multiplication and factorial formulae. To this end, we show that every invariant has a so-called rational extension, having some desired invariance properties. The existence of such an extension, which enables to express formally the above heuristic concept, is not apparent and its construction is the main novelty of the paper.
format Preprint
id arxiv_https___arxiv_org_abs_2603_13889
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle A note on the invariants of the $L$-functions
Kaczorowski, Jerzy
Perelli, Alberto
Number Theory
11M41
We explain the exact meaning of a statement we made in a previous paper on invariants, namely that a complex-valued function of the data of the functional equation of an $L$-function is an invariant if and only if it is stable under the multiplication and factorial formulae. To this end, we show that every invariant has a so-called rational extension, having some desired invariance properties. The existence of such an extension, which enables to express formally the above heuristic concept, is not apparent and its construction is the main novelty of the paper.
title A note on the invariants of the $L$-functions
topic Number Theory
11M41
url https://arxiv.org/abs/2603.13889