Eisenstein series modulo prime powers

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Authors: Scott Ahlgren, Cruz Castillo, Clayton Williams
Cited by: 0

Abstract

If p ≥ 5 p\geq 5 is prime and k ≥ 4 k\geq 4 is an even integer with ( p − 1 ) ∤ k (p-1)\nmid k we consider the Eisenstein series G k G_k on S L 2 ( Z ) SL_2(\mathbb {Z}) modulo powers of p p . It is classically known that for such k k we have G k ≡ G k ′ ( mod p ) G_k\equiv G_{k’}\pmod p if k ≡ k ′ ( mod p − 1 ) k\equiv k’\pmod {p-1} . Here we obtain a generalization modulo prime powers p m p^m by giving an expression for G k ( mod

Fields of Study & Subjects

Advanced Mathematical Identities Advanced Algebra and Geometry Algebraic Geometry and Number Theory

Publication details

Journal / source
Proceedings of the American Mathematical Society Series B
Volume
13
Issue
7
Pages
1–13
Publication date
12 June 2026
Language
EN