Streamlined WZ method proofs of Van Hamme supercongruences

Fuente: arXiv
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Main Author: Valloud, Andres
Format: Preprint
Published: 2025
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author Valloud, Andres
author_facet Valloud, Andres
contents Using the WZ method to prove supercongruences critically depends on an inspired WZ pair choice. This paper demonstrates a procedure for finding WZ pair candidates to prove a given supercongruence. When suitable WZ pairs are thus obtained, coupling them with the $p$-adic approximation of $Γ_p$ by Long and Ramakrishna enables uniform proofs for the Van Hamme supercongruences (B.2), (C.2), (D.2), (E.2), (F.2), (G.2), and (H.2). This approach also yields the known extensions of G.2 modulo $p^4$, and of H.2 modulo $p^3$ when $p$ is $3$ modulo $4$. Finally, the Van Hamme supercongruence (I.2) is shown to be a special case of the WZ method where Gosper's algorithm itself succeeds.
format Preprint
id arxiv_https___arxiv_org_abs_2508_00343
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Streamlined WZ method proofs of Van Hamme supercongruences
Valloud, Andres
Number Theory
Using the WZ method to prove supercongruences critically depends on an inspired WZ pair choice. This paper demonstrates a procedure for finding WZ pair candidates to prove a given supercongruence. When suitable WZ pairs are thus obtained, coupling them with the $p$-adic approximation of $Γ_p$ by Long and Ramakrishna enables uniform proofs for the Van Hamme supercongruences (B.2), (C.2), (D.2), (E.2), (F.2), (G.2), and (H.2). This approach also yields the known extensions of G.2 modulo $p^4$, and of H.2 modulo $p^3$ when $p$ is $3$ modulo $4$. Finally, the Van Hamme supercongruence (I.2) is shown to be a special case of the WZ method where Gosper's algorithm itself succeeds.
title Streamlined WZ method proofs of Van Hamme supercongruences
topic Number Theory
url https://arxiv.org/abs/2508.00343