Results 31 to 40 of about 9,502,067 (333)

Experimental and Numerical Study of a Microcogeneration Stirling Unit under On–Off Cycling Operation

open access: yesEnergies, 2021
Stirling units are a viable option for micro-cogeneration applications, but they operate often with multiple daily startups and shutdowns due to the variability of load profiles.
Gianluca Valenti   +5 more
doaj   +1 more source

Negative $q$-Stirling numbers [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2015
The notion of the negative $q$-binomial was recently introduced by Fu, Reiner, Stanton and Thiem. Mirroring the negative $q$-binomial, we show the classical $q$ -Stirling numbers of the second kind can be expressed as a pair of statistics on a subset of restricted growth words. The resulting expressions are polynomials in $q$ and $(1+q)$.
Cai, Yue, Readdy, Margaret
openaire   +5 more sources

Extended Bernoulli and Stirling matrices and related combinatorial identities [PDF]

open access: yes, 2013
In this paper we establish plenty of number theoretic and combinatoric identities involving generalized Bernoulli and Stirling numbers of both kinds. These formulas are deduced from Pascal type matrix representations of Bernoulli and Stirling numbers ...
Can, Mümün, Dağlı, M. Cihat
core   +1 more source

The Jacobi–Stirling numbers

open access: yesJournal of Combinatorial Theory, Series A, 2013
17 pages, 3 ...
Wolfgang Gawronski   +3 more
openaire   +3 more sources

Generalized degenerate Bernoulli numbers and polynomials arising from Gauss hypergeometric function

open access: yesAdvances in Difference Equations, 2021
A new family of p-Bernoulli numbers and polynomials was introduced by Rahmani (J. Number Theory 157:350–366, 2015) with the help of the Gauss hypergeometric function.
Taekyun Kim   +4 more
doaj   +1 more source

Stirling Numbers of Forests and Cycles [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2013
For a graph $G$ and a positive integer $k$, the graphical Stirling number $S(G,k)$ is the number of partitions of the vertex set of $G$ into $k$ non-empty independent sets. Equivalently it is the number of proper colorings of $G$ that use exactly $k$ colors, with two colorings identified if they differ only on the names of the colors.
Do Trong Thanh, David Galvin
openaire   +3 more sources

A Faster and More Accurate Algorithm for Calculating Population Genetics Statistics Requiring Sums of Stirling Numbers of the First Kind

open access: yesG3: Genes, Genomes, Genetics, 2020
Ewen’s sampling formula is a foundational theoretical result that connects probability and number theory with molecular genetics and molecular evolution; it was the analytical result required for testing the neutral theory of evolution, and has since ...
Swaine L. Chen, Nico M. Temme
doaj   +1 more source

An Effective Tableau System for the Linear Time µ-Calculus [PDF]

open access: yes, 1996
We present a tableau system for the model checking problem of the linear time µ-calculus. It improves the system of Stirling and Walker by simplifying the success condition for a tableau. In our system success for a leaf is determined by the path leading
Bradfield, Julian   +2 more
core   +3 more sources

Note on r-central Lah numbers and r-central Lah-Bell numbers

open access: yesAIMS Mathematics, 2022
The r-Lah numbers generalize the Lah numbers to the r-Stirling numbers in the same sense. The Stirling numbers and the central factorial numbers are one of the important tools in enumerative combinatorics. The r-Lah number counts the number of partitions
Hye Kyung Kim
doaj   +1 more source

On partitions, surjections, and Stirling numbers [PDF]

open access: yesBulletin of the Belgian Mathematical Society - Simon Stevin, 1994
Electrical Engineering, Mathematics and Computer ...
Hilton, P. (author)   +2 more
openaire   +3 more sources

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