# Siegel-Walfisz theorem

> English word · Proper noun

## Definitions
1. A particular refinement of the prime number theorem and of Dirichlet's theorem on primes in arithmetic progressions.

## Etymology
Obtained by Arnold Walfisz as an application of a theorem by Carl Ludwig Siegel.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/siegel-walfisz-theorem