23.04.2017

 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 Current rejection rate: 80 % RSS
Contents (PDF)
Vol. 19 (2003), No. 1,
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 On the approximation of fixed points of weak contractive mappings Author: Vasile Berinde Abstract: In this paper, the class of weak contractive type mappings, introduced in [3] and studied in [3] and [4] is compared to some other well known contractive type mappings in Rhoades classification [24]. As corollaries of our main results, we obtain several convergence theorems for approximating fixed points by means of Picard iteration. These complete or extend the corresponding results in literature by providing error estimates, rate of convergence for the used iterative method as well as results concerning the data dependence of the fixed points.PDF | No. of downloads: 253 Full access PDF | Simultaneous approximation by Schurer type operators Author: Dan Bărbosu / Mihai Bărbosu Abstract: PDF | No. of downloads: 272 Full access PDF | New stable semi-explicit Runge-Kutta methods Author: Iulian Coroian Abstract: Semi-explicit Runge-Kutta methods of order 3 with four stages and order 4 with five stages are discussed, from stability point of view. Some A-stable and L-stable subclasses of such methods are highlighted.PDF | No. of downloads: 203 Full access PDF | On a set-valued integral Author: Anca Croitoru Abstract: We have introduced in [5] an integral for multifunctions with respect to a multimeasure, both the multifunction and the multimeasure are taking values in the family of all nonempty compact convex subsets of a real Banach algebra. In this work we establish some relations between the integral defined in [5] and the integrals of Aumann [1], Brink - Maritz [3], Brooks [4] and Martellotti - Sambucini [9]. Then we give a Fichtenholz - Kantorovic type theorem using the integral defined in [5].PDF | No. of downloads: 230 Full access PDF | On strongly $\delta$-continuous functions Author: Krishnendu Dutta / S. Ganguly Abstract: In this paper attempt has been made to study a new class of function called strongly -continuous function and special emphasis is given on homotopy and retraction related properties.PDF | No. of downloads: 263 Full access PDF | Positive solutions of nonlinear functional-integral equations Author: Andrei Horvat-Marc Abstract: PDF | No. of downloads: 224 Full access PDF | On some bivariate Hermite type interpolation and numerical integration formulae Author: Ioana Tașcu Abstract: In this paper we present a bivariate interpolation formula using four multi- ple nodes and then the corresponding numerical integration formula for a double integral extended over a rectangular domain. The cubature formula (3.1) represents an extension to two variables of the Hermite quadrature formula (1.1). At (4.1) we give an integral representation for the remainder of this cubature formula.PDF | No. of downloads: 272 Full access PDF | Professor Iulian Coroian at his 65th anniversary Author: Vasile Berinde Abstract: No. of downloads: Full access PDF | The deduction and evaluation of a new colour space for image compression Author: Ovidiu Cosma Abstract: Abstract. The properties of the colour space affect the performance of the image compression scheme, especially at high compression ratios. This paper proposes a new colour space, whose chrominance axes were deduced experimentally.PDF | No. of downloads: 127 Full access PDF | Y. L. Nosenko (1941-2003) Author: Vasile Berinde Abstract: PDF | No. of downloads: 192 Full access PDF | On some bivariate Hermite type interpolation and numerical integration formulae Author: Ioana Tașcu Abstract: Abstract. In this paper we present a bivariate interpolation formula using four multiple nodes and then the corresponding numerical integration formula for a double integral extended over a rectangular domain. The cubature formula (3.1) represents an extension to two variables of the Hermite quadrature formula (1.1). At (4.1) we give an integral representation for the remainder of this cubature formula.PDF | No. of downloads: 130 Full access PDF |

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