Results 31 to 40 of about 416 (164)

Operational Methods in the Study of Sobolev-Jacobi Polynomials

open access: yesMathematics, 2019
Inspired by ideas from umbral calculus and based on the two types of integrals occurring in the defining equations for the gamma and the reciprocal gamma functions, respectively, we develop a multi-variate version of umbral calculus and of the so-called ...
Nicolas Behr   +4 more
doaj   +1 more source

λ-q-Sheffer sequence and its applications

open access: yesDemonstratio Mathematica, 2022
Recently, Kim-Kim [J. Math. Anal. Appl. 493 (2021), no. 1] introduced the degenerate Sheffer sequence and λ-Sheffer sequence. The purpose of this article is to study λ-q-Sheffer sequence and the degenerate q-Sheffer sequence, which are derived from the ...
Kim Taekyun, Kim Dae San, Kim Hye Kyung
doaj   +1 more source

Some identities of degenerate harmonic and degenerate hyperharmonic numbers arising from umbral calculus

open access: yesOpen Mathematics, 2023
Hyperharmonic numbers were introduced by Conway and Guy (The Book of Numbers, Copernicus, New York, 1996), whereas harmonic numbers have been studied since antiquity.
Kim Taekyun, Kim Dae San, Kim Hye Kyung
doaj   +1 more source

Universal constructions in umbral calculus [PDF]

open access: yes, 1998
Modern umbral calculus is steadily approaching maturity, as applications develop in several areas of mathematics.
Nigel Ray
core   +1 more source

Formal calculus, umbral calculus, and basic axiomatics of vertex algebras: [PDF]

open access: yes, 2009
The central subject of this thesis is formal calculus together with certain applications to vertex operator algebras and combinatorics. By formal calculus we mean mainly the formal calculus that has been used to describe vertex operator algebras and ...
Robinson, Thomas J.
core   +1 more source

Umbral Calculus

open access: yesThe Electronic Journal of Combinatorics, 2002
We survey the mathematical literature on umbral calculus (otherwise known as the calculus of finite differences) from its roots in the 19th century (and earlier) as a set of “magic rules” for lowering and raising indices, through its rebirth in the 1970’s as Rota’s school set it on a firm logical foundation using operator methods, to the current state ...
A. Di Bucchianico, D. Loeb
openaire   +1 more source

Operator Ordering and Solution of Pseudo-Evolutionary Equations

open access: yesAxioms, 2019
The solution of pseudo initial value differential equations, either ordinary or partial (including those of fractional nature), requires the development of adequate analytical methods, complementing those well established in the ordinary differential ...
Nicolas Behr   +2 more
doaj   +1 more source

The theory of the umbral calculus III

open access: yesJournal of Mathematical Analysis and Applications, 1982
Let P denote the commutative algebra of all polynomials in a single variable x with coefficients in a field K (real or complex) of characteristic zero. Let P * be the vector space of all linear functionals on P and the action of a linear functional L on a polynomial P(x) is denoted by \(\).
openaire   +5 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

Two New Generalizations of Extended Bernoulli Polynomials and Numbers, and Umbral Calculus

open access: yesJournal of Mathematics, 2022
Among a remarkably large number of various extensions of polynomials and numbers, and diverse introductions of new polynomials and numbers, in this paper, we choose to introduce two new generalizations of some extended Bernoulli polynomials and numbers ...
Nabiullah Khan   +3 more
doaj   +1 more source

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