Projection methods, isotone projection cones, and the complementarity problem
Abstract AuthorsG. Isac A.B. Nemeth Institutul de Calcul Keywords? Paper coordinatesG. Isac, A.B. Németh, Projection methods, isotone projection cones, and the…
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Photogravitational models in Celestial Mechanics
Abstract AuthorsMira-Cristiana Anisiu Institutul de Calcul, Cluj-Napoca, Romania Keywords? Paper coordinatesM.-C. Anisiu, Photogravitational models in Celestial Mechanics, Sesiunea Naţională de Astronomie…
Sequences of linear operators related to Cesàro-convergent sequences
Abstract Given a Cesaro-convergent sequence of real numbers \((a_{n}% )_{n\in \mathbb{N}}\), a sequence \((\varphi_{n})_{n\in \mathbb{N}}\) of operators is defined on…
Differential equations that model electrical circuits
Abstract AuthorsDaniel Anisiu Universitatea Tehnica Cluj-Napoca, Facultatea de Electronica si Telecomunicatii Mira-Cristiana Anisiu Tiberiu Popoviciu Institute of Numerical Analysis Romanian…
Julia Robinson and Hilbert’s tenth problem
Abstract One of the solved Hilbert’s problems stated in 1900 at the International Congress of Mathematicians in Paris is: Given…
On a combinatorics problem
Abstract We present a problem in arrangements, which was solved in 1934 by M. H. Martin in a constructive way,…
Vera Rubin and the hypothesis of dark matter existence
Abstract Our solar system belongs to the Milky Way galaxy. The fact that there exist other galaxies is known since…
Data dependence for the solution of a Lotka-Volterra system with two delays
Abstract AuthorsDiana Otrocol “Babes-Bolyai” University Department of Applied Mathematics Keywords? Paper coordinatesD. Otrocol, Data dependence for the solution of a Lotka-Volterra…
Iterative functional-differential system with retarded argument
Abstract Existence, uniqueness and data dependence results of solution to theCauchy problem for iterative functional-differential system with delays are ob-tained…
Differentiability with respect to a parameter for a Lotka-Volterra system with delays, via step method
Abstract In this paper, using the step method, we establish the differentiability with respect to parameter for a Lotka-Volterra system…