Results 31 to 40 of about 69 (69)

A bijection between the set of nesting-similarity classes and L & P matchings [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2018
Matchings are frequently used to model RNA secondary structures; however, not all matchings can be realized as RNA motifs. One class of matchings, called the L $\&$ P matchings, is the most restrictive model for RNA secondary structures in the Largest ...
Megan A. Martinez, Manda Riehl
doaj   +1 more source

Infinite products over visible lattice points

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 17, Issue 4, Page 637-654, 1994., 1993
About fifty new multivariate combinatorial identities are given, connected with partition theory, prime products, and Dirichlet series. Connections to Lattice Sums in Chemistry and Physics are alluded to also.
Geoffrey B. Campbell
wiley   +1 more source

Fully degenerate poly-Bernoulli numbers and polynomials

open access: yesOpen Mathematics, 2016
In this paper, we introduce the new fully degenerate poly-Bernoulli numbers and polynomials and inverstigate some properties of these polynomials and numbers.
Kim Taekyun, Kim Dae San, Seo Jong-Jin
doaj   +1 more source

Classical pattern distributions in $\mathcal{S}_{n}(132)$ and $\mathcal{S}_{n}(123)$ [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2019
Classical pattern avoidance and occurrence are well studied in the symmetric group $\mathcal{S}_{n}$. In this paper, we provide explicit recurrence relations to the generating functions counting the number of classical pattern occurrence in the set of ...
Dun Qiu, Jeffrey Remmel
doaj   +1 more source

Consequences of a sextuple‐product identity

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 10, Issue 3, Page 545-549, 1987., 1987
A sextuple‐product identity, which essentially results from squaring the classical Gauss‐Jacobi triple‐product identity, is used to derive two trigonometrical identities. Several special cases of these identities are then presented and discussed.
John A. Ewell
wiley   +1 more source

Consecutive Patterns in Inversion Sequences [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2019
An inversion sequence of length $n$ is an integer sequence $e=e_{1}e_{2}\dots e_{n}$ such that $0\leq e_{i}
Juan S. Auli, Sergi Elizalde
doaj   +1 more source

The 26 Wilf-equivalence classes of length five quasi-consecutive patterns [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2018
We present two families of Wilf-equivalences for consecutive and quasi-consecutive vincular patterns. These give new proofs of the classification of consecutive patterns of length $4$ and $5$.
Evan Chen, Shyam Narayanan
doaj   +1 more source

A Pipe Dream Perspective on Totally Symmetric Self-Complementary Plane Partitions

open access: yesForum of Mathematics, Sigma
We characterize totally symmetric self-complementary plane partitions (TSSCPP) as bounded compatible sequences satisfying a Yamanouchi-like condition. As such, they are in bijection with certain pipe dreams.
Daoji Huang, Jessica Striker
doaj   +1 more source

Fourier series of functions involving higher-order ordered Bell polynomials

open access: yesOpen Mathematics, 2017
In 1859, Cayley introduced the ordered Bell numbers which have been used in many problems in number theory and enumerative combinatorics. The ordered Bell polynomials were defined as a natural companion to the ordered Bell numbers (also known as the ...
Kim Taekyun   +3 more
doaj   +1 more source

Continued fractions for permutation statistics [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2018
We explore a bijection between permutations and colored Motzkin paths that has been used in different forms by Foata and Zeilberger, Biane, and Corteel.
Sergi Elizalde
doaj   +1 more source

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