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20242026
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math.NT2026

Congruences for sums involving

Sandro Mattarei, Roberto Tauraso

We primarily investigate congruences modulo for finite sums of the form over the ranges and , where is a prime larger than the p…

math.NT2025

A -analogue of the Koecher-Leshchiner generating function of odd zeta values

Roberto Tauraso

In the 1980s, Koecher and, independently, Leshchiner found an elegant formula for the generating function of odd zeta values. In this short note, we derive a -analogue of this f…

math.NT2025

Arithmetic properties of MacMahon-type sums of divisors: the odd case

James A. Sellers, Roberto Tauraso

A century ago, P. A. MacMahon introduced two families of generating functions, $$ \sum_{1\leq n_1<n_2<\cdots<n_t}\prod_{k=1}^t\frac{q^{n_k}}{(1-q^{n_k})^2} \quad\text{ and } \sum_{…

math.NT2025

Arithmetic properties of MacMahon-type sums of divisors

James A. Sellers, Roberto Tauraso

In this paper, we prove several new infinite families of Ramanujan--like congruences satisfied by the coefficients of the generating function which is an extension of Ma…

math.NT2024

Further study on MacMahon-type sums of divisors

Tewodros Amdeberhan, George E. Andrews, Roberto Tauraso

This paper is devoted to the study of $$ U_t(a,q):=\sum_{1\leq n_1<n_2<\cdots<n_t}\frac{q^{n_1+n_2+\cdots+n_t}}{(1+aq^{n_1}+q^{2n_1})(1+aq^{n_2}+q^{2n_2})\cdots(1+aq^{n_t}+q^{2n_t}…

math.NT2024

Congruences for sums of MacMahon's -Catalan polynomials

Tewodros Amdeberhan, Roberto Tauraso

One variant of the -Catalan polynomials is defined in terms of Gaussian polynomials by . Liu s…