Abstract: In order to mark the 20th anniversary of the journal which currently holds the name Creative Mathematics and Informatics, this note gives a brief account on the main chronological points and present some data to illustrate the evolution of its editorial policy and profile in the period 1991-2011.
On gamma-regular-open sets and gamma-closed spaces
Author: Sabir Hussain
Abstract: The purpose of this paper is to continue studying the properties
of gamma-regular open sets introduced and explored by S.
Hussain and B. Ahmad in 2007. The concept of gamma-closed
spaces have also been defined and discussed.
The generalization of some results for Bernstein and Stancu operators
Author: Dan Miclăuș / Petru I. Braica
Abstract: In the present paper we generalize some results for Bernstein and Stancu operators. Firstly, we establish a relationship between two results concerning calculation of test functions by Bernstein operators. Secondly, using this relationship and some known results we prove in every case a Voronovskaja type theorem, the uniform convergence and the order of approximation for Bernstein and Stancu operators.
A simple simulation technique for gravitational lenses
Author: Cristian Eduard Rusu / Betria Silvana Rossa
Abstract: The present article discusses the simulation of Gravitational Lensing with an algorithm developed in C++ and using the EasyBMP library. The algorithm numerically solves the general gravitational lens equation in the astrophysically significant weak field case, for any single-plane lens configuration. Examples of execution are considered, and a discussion is carried out on the advantages and disadvantages of the direct simulation technique employed.