27.05.2017   




Print Edition: ISSN 1584 - 2851
Online Edition: ISSN 1843 - 4401


Carpathian J. Math. is a category A journal in the CNCSIS classification

Impact Factor 2015:     0.610

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Contents (PDF)
Vol. 26 (2010), No. 1, 15 March 2010
 
Stable Gabriel topologies
Author: Panaite Anghel / Constantin Năstăsescu / Laura Năstăsescu
Abstract: In 1973, Paul-Jean Cahen introduced in his Ph. D. thesis the notion of stable additive (Gabriel) topology for commutative rings. In the present paper, we generalize his results to the noncommutative setting.
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No. of downloads: 258
On Gamma-hyperideals in Gamma-semihypergroup
Author: S. M. Anvariyeh / S. Mirvakili / B. Davvaz
Abstract:
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No. of downloads: 203
Bivariate Schurer-Stancu operators revisited
Author: Dan Bărbosu / Ovidiu T. Pop
Abstract:
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No. of downloads: 195
Fixed points and invariant approximation in random normed spaces
Author: Ismat Beg / Mujahid Abbas
Abstract: Aim of this paper is to provide necessary conditions for the existence of fixed points of nonexpansive mappings on a nonconvex domain of a random normed space. As an application, related results on invariant approximation are also derived.
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No. of downloads: 209
Smooth dependence by lag at initial value problems for delay integro-differential equation
Author: Alexandru Mihai Bica / Loredana-Florentina Galea
Abstract: Using the Perov's fixed point theorem and the theorem of fiber generalized contractions obtained by I. A. Rus, here we investigate the smooth dependence by lag for the solution of an initial value problem associated to a nonlinear Volterra integro-differential equation with constant delay. Such equation appears as a model in the spread of infectious diseases with a contact rate that varies seasonally. Sufficient conditions for the smooth dependence by lag of the proportion of infections in population and of the speed of infectivity are derived.
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No. of downloads: 140
Equations with almost periodic functions
Author: Silvia-Otilia Corduneanu
Abstract:
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No. of downloads: 156
Sadhana polynomial in nano-dendrimers
Author: Mircea V. Diudea / Aniela E. Vizitiu / M. Mirzagar / A. R. Ashrafi
Abstract:
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No. of downloads: 186
Existence and uniqueness for C_0-semigroups on the dual of a Banach space
Author: Ludovic Dan Lemle
Abstract:
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No. of downloads: 181
Existence of positive periodic solutions of functional difference equations with sign-changing terms
Author: Yuji Liu
Abstract:
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No. of downloads: 166
A quicker convergence toward the gamma constant with the logarithm term involving the constant e
Author: Cristinel Mortici
Abstract:
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No. of downloads: 181
Generalization of an integral equation related to some epidemic models
Author: Ion Marian Olaru
Abstract:
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No. of downloads: 172
On some ergodic theorems for a universally bounded operator
Author: Flavius Pater / Tudor Bânzar
Abstract: In this paper some ergodic theorems for universally bounded operators on locally convex spaces are studied. In this framework the validity of M. Lin's results are proved.
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No. of downloads: 151
Ulam stabilities of ordinary differential equations in a Banach space
Author: Ioan A. Rus
Abstract:
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No. of downloads: 191
Approximation theorems in weighted Lorentz spaces
Author: Yunus E. Yildirir / Daniyal M. Israfilov
Abstract: In this paper we deal with the converse and simultaneous approximation problems of functions possessing derivatives of positive orders by trigonometric polynomials in the weighted Lorentz spaces with weights satisfying the so called Muckenhoupt's A_{p} condition.
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No. of downloads: 230


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