Results 31 to 40 of about 100,848 (293)

Baer rings of generalized power series [PDF]

open access: yesGlasgow Mathematical Journal, 2002
We show that if R is a commutative ring and (S, \leq ) a strictly totally ordered monoid, then the ring [[R^{S, \leq }]] of generalized power series is Baer if and only if R is Baer.
openaire   +2 more sources

ACCOUNTING OF TUNNELING EFFECTS WHEN CALCULATING THE ENERGY SPECTRUM OF THE SCHRÖDINGER EQUATION

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2019
The general scheme of the method for integrating second-order differential equations in the form of power series is presented. The obtained results for the Schrödinger equation with potentials with two and three minima for quantum anharmonic oscillators ...
I.N. Belyaeva   +3 more
doaj   +1 more source

Symmetry Analysis and Exact Solutions to the Space-Dependent Coefficient PDEs in Finance

open access: yesAbstract and Applied Analysis, 2013
The variable-coefficients partial differential equations (vc-PDEs) in finance are investigated by Lie symmetry analysis and the generalized power series method. All of the geometric vector fields of the equations are obtained; the symmetry reductions and
Hanze Liu
doaj   +1 more source

THE COMPUTER – ASSISTED SOLUTION OF THE ONE – DIMENSIONAL SCHRÖDINGER EQUATION TAKING INTO ACCOUNT TUNNELING EFFECTS

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2019
The general scheme of the method of integration of the second order ordinary differential equations with regular singular points is outlined. The algorithm of finding a general solution of the second order differential equation with regular singular ...
I.N. Belyaeva   +5 more
doaj   +1 more source

A new extension on the theorem of Bor

open access: yesComptes Rendus. Mathématique, 2021
In [8], Bor has obtained a main theorem dealing with Riesz summability factors of infinite series and Fourier series. In this paper, we generalized that theorem to $|A,\theta _{n}|_{k}$ summability method for taking power increasing sequence.
Yıldız, Şebnem
doaj   +1 more source

On morphically generated formal power series [PDF]

open access: yesRAIRO - Theoretical Informatics and Applications, 1995
Summary: We define morphically generated formal power series and study their properties.These series are obtained by interpreting various \(L\) systems as mechanisms to generate power series. The well-known classes of rational and algebraic power series are obtained as a special case.
openaire   +2 more sources

On Power Series in General Analysis

open access: yesMathematische Annalen, 1922
In his paper 1) : Wesen und Ziele einer Analysis der unendlichvielen unabhangigen Variablen, of 1909 Hilbert has given, with indications of the earlier literature, a sketch of the theory of functions of denumerably infinitely many independent variables in its central position amongst the various doctrines of Analysis.
openaire   +1 more source

Modular Isolated DC-DC Converters for Ultra-Fast EV Chargers: A Generalized Modeling and Control Approach

open access: yesEnergies, 2020
Electric Vehicles (EVs) play a significant role in the reduction of CO2 emissions and other health-threatening air pollutants Accordingly, several research studies are introduced owing to replacing conventional gasoline-powered vehicles with battery ...
Mena ElMenshawy, Ahmed Massoud
doaj   +1 more source

Bayesian Analysis of Misclassified Generalized Power Series Distributions Under Different Loss Functions

open access: yesJournal of Statistical Theory and Applications (JSTA), 2020
In certain experimental investigations involving discrete distributions external factors may induce measurement error in the form of misclassification.
Peer Bilal Ahmad
doaj   +1 more source

On the Complexity of Composition and Generalized Composition of Power Series

open access: yesSIAM Journal on Computing, 1980
Let F(x) = f1x + f2(x)(x) + . . . be a formal power series over a field Delta. Let F superscript 0(x) = x and for q = 1,2 . . . , define F superscript q(x) = F superscript (q-1) (F(x)). The obvious algorithm for computing the first n terms of F superscript q(x) is by the composition position analogue of repeated squaring.
Brent, R. P., Traub, Joseph F.
openaire   +3 more sources

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