Results 11 to 20 of about 53,705 (163)

An Alternative Proof of a Closed Formula for Central Factorial Numbers of the Second Kind

open access: yesTurkish Journal of Analysis and Number Theory, 2019
In the short note, by virtue of several formulas and identities for special values of the Bell polynomials of the second kind, the authors provide an alternative proof of a closed formula for central factorial numbers of the second kind. Moreover, the authors pose two open problems on closed form of a special Bell polynomials of the second kind and on ...
Feng Qi, Guo-Sheng Wu, Bai-Ni Guo
openaire   +1 more source

Normally ordered forms of powers of differential operators and their combinatorics [PDF]

open access: yes, 2018
We investigate the combinatorics of the general formulas for the powers of the operator h∂k, where h is a central element of a ring and ∂ is a differential operator. This generalizes previous work on the powers of operators h∂.
Briand, Emmanuel   +2 more
core   +2 more sources

Accounting for the Role of Long Walks on Networks via a New Matrix Function [PDF]

open access: yes, 2016
We introduce a new matrix function for studying graphs and real-world networks based on a double-factorial penalization of walks between nodes in a graph. This new matrix function is based on the matrix error function.
Estrada, Ernesto, Silver, Grant
core   +2 more sources

Extended r-central Bell polynopmials with umbral calculus viewpoint

open access: yesAdvances in Difference Equations, 2019
Recently, extended r-central factorial numbers of the second kind and extended r-central Bell polynomials were introduced and various results of them were investigated.
Lee-Chae Jang   +3 more
doaj   +1 more source

Extended central factorial polynomials of the second kind

open access: yesAdvances in Difference Equations, 2019
In this paper, we consider the extended central factorial polynomials and numbers of the second kind, and investigate some properties and identities for these polynomials and numbers.
Taekyun Kim   +3 more
doaj   +1 more source

Generic and rhetorical structures of texts : two sides of the same coin? [PDF]

open access: yes, 2005
Two major approaches to textual macro-structures have been developed during the last decades: Register & Genre Theory (R>) and Rhetorical Structure Theory (RST).
Gruber, Helmut, Muntigl, Peter
core   +1 more source

Two variable higher-order central Fubini polynomials

open access: yesJournal of Inequalities and Applications, 2019
Recently, the central Fubini polynomials were introduced in connection with central factorial numbers of the second kind. In this paper, we consider two variable higher-order central Fubini polynomials as a ‘central analogue’ of two variable higher-order
Taekyun Kim   +3 more
doaj   +1 more source

Quantum limits on phase-preserving linear amplifiers [PDF]

open access: yes, 2012
The purpose of a phase-preserving linear amplifier is to make a small signal larger, regardless of its phase, so that it can be perceived by instruments incapable of resolving the original signal, while sacrificing as little as possible in signal-to ...
Caves, Carlton M.   +3 more
core   +2 more sources

Some identities connecting Stirling numbers, central factorial numbers and higher-order Bernoulli polynomials

open access: yesAIMS Mathematics
By utilizing the generating function of higher-order Bernoulli polynomials, we uncover novel relationships that intertwine higher-order Bernoulli polynomials, higher-order Bernoulli numbers, Stirling numbers of the second kind, and central factorial ...
Aimin Xu
doaj   +1 more source

q-Differential equations for q-classical polynomials and q-Jacobi-Stirling numbers [PDF]

open access: yes, 2015
We introduce, characterise and provide a combinatorial interpretation for the so-called q-Jacobi–Stirling numbers. This study is motivated by their key role in the (reciprocal) expansion of any power of a second order q-differential operator having the
Loureiro, Ana F., Zeng, J.
core   +3 more sources

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