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Using techniques due to Coster, we prove a supercongruence for a generalization of the Domb numbers. This extends a recent result of Chan, Cooper and Sica and confirms a conjectural supercongruence for numbers which are coefficients in one…

Number Theory · Mathematics 2021-02-03 Robert Osburn , Brundaban Sahu

In this note, we prove the last remaining case of the original 15 two-term supercongruence conjectures for sporadic sequences. The proof utilizes a new representation for this sequence (due to Gorodetsky) as the constant term of powers of a…

Number Theory · Mathematics 2025-07-14 Brendan Alinquant , Robert Osburn

Recently, Chan, Cooper and Sica conjectured two congruences for coefficients of classical 2F1 hypergeometric series which also arise from power series expansions of modular forms in terms of modular functions. We prove these two congruences…

Number Theory · Mathematics 2010-09-03 Heng Huat Chan , Aristides Kontogeorgis , Christian Krattenthaler , Robert Osburn

In this paper we present many congruences for several Ap\'ery-like sequences.

Number Theory · Mathematics 2020-06-09 Zhi-Hong Sun

We develop the Stienstra-Beukers theory of supercongruences in the setting of the Catalan-Larcombe-French sequence. We also give some applications to other sequences.

Number Theory · Mathematics 2009-06-19 Frazer Jarvis , Helena Verrill

For each of the $15$ known sporadic Ap\'ery-like sequences, we prove congruences modulo $p^2$ that are natural extensions of the Lucas congruences modulo $p$. This extends a result of Gessel for the numbers used by Ap\'ery in his proof of…

Number Theory · Mathematics 2023-01-31 Armin Straub

Using the sign expansion of the surreal numbers, we give a possible notion of convergence for surreal sequences.

Logic · Mathematics 2012-10-23 István Mezö

We establish supercongruences for two kinds of Ap\'ery-like numbers, which involve Bernoulli numbers and Bernoulli polynomials. Conjectural supercongruences of the same type for another four kinds of Ap\'ery-like numbers are also proposed.

Number Theory · Mathematics 2024-05-16 Ji-Cai Liu

We show various supercongruences for truncated series which involve central binomial coefficients and harmonic numbers. The corresponding infinite series are also evaluated.

Number Theory · Mathematics 2017-01-31 Roberto Tauraso

We prove supercongruences modulo $p^2$ for values of truncated hypergeometric series at some special points. The parameters of the hypergeometric series are $d$ copies of $1/2$ and $d$ copies of $1$ for any integer $d\ge2$.

Number Theory · Mathematics 2018-11-01 Frits Beukers , Eric Delaygue

In the course of the proof of the irrationality of zeta(2) R. Apery introduced numbers b_n = \sum_{k=0}^n {n \choose k}^2{n+k \choose k}. Stienstra and Beukers showed that for the prime p > 3 Apery numbers satisfy congruence b((p-1)/2) =…

Number Theory · Mathematics 2019-01-11 Matija Kazalicki

We prove two congruences for the coefficients of power series expansions in t of modular forms where t is a modular function. As a result, we settle two recent conjectures of Chan, Cooper and Sica. Additionally, we provide a table of…

Number Theory · Mathematics 2021-02-03 Robert Osburn , Brundaban Sahu

We give some results and conjectures about recurrence relations for certain sequences of binomial sums.

Combinatorics · Mathematics 2007-05-23 Johann Cigler

We built some congruences on semigroups, from where a decomposition of quasi-separative semigroups was obtained.

Group Theory · Mathematics 2007-05-23 Yu. I. Krasilnikova , B. V. Novikov

In a recent article, Apagodu and Zeilberger (http://arxiv.org/abs/1606.03351)discuss some applications of an algorithm for finding and proving congruence identities (modulo primes) of indefinite sums of many combinatorial sequence. At the…

Number Theory · Mathematics 2016-07-11 Tewodros Amdeberhan , Roberto Tauraso

In this paper we study some sophisticated supercongruences involving dual sequences. For $n=0,1,2,\ldots$ define $$d_n(x)=\sum_{k=0}^n\binom nk\binom xk2^k$$ and $$s_n(x)=\sum_{k=0}^n\binom nk\binom xk\binom{x+k}k=\sum_{k=0}^n\binom…

Number Theory · Mathematics 2017-04-21 Zhi-Wei Sun

In this paper, we shall find a new connection between $n$th degree polynomial mod $p$ congruence with $n$ roots and higher-order Fibonacci and Lucas sequences. We shall first discuss the recent work been done in sequences and their…

General Mathematics · Mathematics 2021-04-19 Darrell Cox , Sourangshu Ghosh , Eldar Sultanow

In this paper we prove some new series for $1/\pi$ as well as related congruences. We also raise several new kinds of series for $1/\pi$ and present some related conjectural congruences involving representations of primes by binary…

Number Theory · Mathematics 2017-12-27 Zhi-Wei Sun

We mainly show a supercongruence for a truncated series with cubes of Catalan numbers which extends a result by Zhi-Wei Sun.

Number Theory · Mathematics 2018-08-02 Roberto Tauraso

A new generalization of the classical separate algebraicity theorem is suggested and proved.

alg-geom · Mathematics 2008-02-03 R. A. Sharipov , E. N. Tzyganov
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