Results 11 to 20 of about 228,694 (166)

Umbral Theory and the Algebra of Formal Power Series

open access: yesAxioms
Umbral theory, formulated in its modern version by S. Roman and G. C. Rota, has been reconsidered in more recent times by G. Dattoli and collaborators with the aim of devising a working computational tool in the framework of special function theory ...
Roberto Ricci
doaj   +3 more sources

On quotients of formal power series [PDF]

open access: yesInformation and Computation, 2022
48 pages, 3 figures, 30 ...
Yongming Li 0001, Qian Wang, Sanjiang Li
openaire   +4 more sources

Equidistribution Modulo 1

open access: yesJournal of Mathematics, 2021
The generalisation of questions of the classic arithmetic has long been of interest. One line of questioning, introduced by Car in 1995, inspired by the equidistribution of the sequence nαn∈N where ...
Wiem Gadri
doaj   +1 more source

Ranking and formal power series

open access: yesTheoretical Computer Science, 1991
The ranking problem for a language \(L\subseteq A^*\) is the following: given w in L, compute the integer n such that w is the n-th element of L for the lexicographic order (u\(\leq v\) if either \(| u|
A. Bertoni, D. Bruschi, M. Goldwurm
openaire   +2 more sources

An Invitation to Formal Power Series

open access: yesJahresbericht der Deutschen Mathematiker-Vereinigung, 2022
Abstract This is an account on the theory of formal power series developed entirely without any analytic machinery. Combining ideas from various authors we are able to prove Newton’s binomial theorem, Jacobi’s triple product, the Rogers–Ramanujan identities and many other prominent results.
openaire   +2 more sources

Convergence of a formal power series and Gelfond-Leont’ev derivatives [PDF]

open access: yesМатематичні Студії, 2011
Given a formal power series, we establish conditions on the formal power seriess under which the series represents a function analytic in the disk {z:|z|≤R},R∈(0,+∞]. We also give a survey of well-know results for the case R=+∞.
S. I. Fedynyak, M. M. Sheremeta
doaj  

Fractional-Order Logistic Differential Equation with Mittag–Leffler-Type Kernel

open access: yesFractal and Fractional, 2021
In this paper, we consider the Prabhakar fractional logistic differential equation. By using appropriate limit relations, we recover some other logistic differential equations, giving representations of each solution in terms of a formal power series ...
Iván Area, Juan J. Nieto
doaj   +1 more source

Skew and infinitary formal power series

open access: yesTheoretical Computer Science, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Manfred Droste, Dietrich Kuske
openaire   +4 more sources

Approximately Multiplicative Functionals on the Spaces of Formal Power Series

open access: yesAbstract and Applied Analysis, 2011
We characterize the conditions under which approximately multiplicative functionals are near multiplicative functionals on weighted Hardy spaces.
F. Ershad, S. H. Petroudi
doaj   +1 more source

On Boundary Layer Expansions for a Singularly Perturbed Problem with Confluent Fuchsian Singularities

open access: yesMathematics, 2020
We consider a family of nonlinear singularly perturbed PDEs whose coefficients involve a logarithmic dependence in time with confluent Fuchsian singularities that unfold an irregular singularity at the origin and rely on a single perturbation parameter ...
Stephane Malek
doaj   +1 more source

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