Results 11 to 20 of about 1,204 (77)

Simultaneous generation for zeta values by the Markov-WZ method [PDF]

open access: yes, 2008
By application of the Markov-WZ method, we prove a more general form of a bivariate generating function identity containing, as particular cases, Koecher's and Almkvist-Granville's Ap\'ery-like formulae for odd zeta values. As a consequence, we get a new
Kh. Hessami   +2 more
core   +7 more sources

Flip-sort and combinatorial aspects of pop-stack sorting [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2021
Flip-sort is a natural sorting procedure which raises fascinating combinatorial questions. It finds its roots in the seminal work of Knuth on stack-based sorting algorithms and leads to many links with permutation patterns. We present several structural,
Andrei Asinowski   +2 more
doaj   +1 more source

MacMahon’s statistics on higher-dimensional partitions

open access: yesForum of Mathematics, Sigma, 2023
We study some combinatorial properties of higher-dimensional partitions which generalize plane partitions. We present a natural bijection between d-dimensional partitions and d-dimensional arrays of nonnegative integers.
Alimzhan Amanov, Damir Yeliussizov
doaj   +1 more source

1974 conjecture of Andrews on partitions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 2004, Issue 21, Page 1097-1104, 2004., 2004
The case k = a of the 1974 conjecture of Andrews on two partition functions Aλ,k,a(n) and Bλ,k,a(n) was proved by the first author and Sudha (1993) and the case k = a + 1 was established by the authors (2000). In this paper, we prove that the conjecture is false and give a revised conjecture for a particular case when λ is even.
Padmavathamma, M. R. Salestina
wiley   +1 more source

A quantum field theoretical representation of Euler‐Zagier sums

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 31, Issue 3, Page 127-148, 2002., 2002
We establish a novel representation of arbitrary Euler‐Zagier sums in terms of weighted vacuum graphs. This representation uses a toy quantum field theory with infinitely many propagators and interaction vertices. The propagators involve Bernoulli polynomials and Clausen functions to arbitrary orders.
Uwe Müller, Christian Schubert
wiley   +1 more source

The log-concavity of the q-derangement numbers of type B

open access: yesOpen Mathematics, 2018
Recently, Chen and Xia proved that for n ≥ 6, the q-derangement numbers Dn(q) are log-concave except for the last term when n is even. In this paper, employing a recurrence relation for DnB(q) $\begin{array}{} \displaystyle D^B_n(q) \end{array ...
Liu Eric H., Du Wenjing
doaj   +1 more source

Some combinatorial matrices and their LU-decomposition

open access: yesSpecial Matrices, 2020
Three combinatorial matrices were considered and their LU-decompositions were found. This is typically done by (creative) guessing, and the proofs are more or less routine calculations.
Prodinger Helmut
doaj   +1 more source

A new proof of some identities of Bressoud

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 32, Issue 10, Page 627-633, 2002., 2002
We provide a new proof of the following two identities due to Bressoud: ∑m=0Nqm2[Nm]=∑m=−∞∞(−1)mqm(51m+)/2 [ 2NN+2m], ∑m=0Nqm2+m[Nm]=(1/(1−qN+1))∑m=−∞∞(−1)m×qm(53m+)/2 [ 22N+N+22m+], which can be considered as finite versions of the Rogers‐Ramanujan identities.
Robin Chapman
wiley   +1 more source

Evaluation of integrals with hypergeometric and logarithmic functions

open access: yesOpen Mathematics, 2018
We provide an explicit analytical representation for a number of logarithmic integrals in terms of the Lerch transcendent function and other special functions.
Sofo Anthony
doaj   +1 more source

Patterns in Inversion Sequences I [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2016
Permutations that avoid given patterns have been studied in great depth for their connections to other fields of mathematics, computer science, and biology.
Sylvie Corteel   +3 more
doaj   +1 more source

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