Mukherjee, M. N.; Mandal, Dhananjoy(Editorial Universitat Politècnica de València, 2013-10-01)
The purpose of this paper is to introduce the notion of near metrizability for topological spaces, which is strictly weaker than the concept of metrizability. A number of characterizations of nearly metrizable spaces is ...
Bayhan, Sadik; Kanibir, A.; Reilly, Ivan L.(Editorial Universitat Politècnica de València, 2013-10-01)
[EN] This paper investigates generalized topological spaces and functions between such spaces from the perspective of change of generalized topology. In particular, it considers the preservation of generalized connectedness ...
Milani, Vida; Mansourbeigi, Seyed(Editorial Universitat Politècnica de València, 2013-10-01)
[EN] The concept of discrete multivalued dynamical systems for noncommutative CW complexes is developed. Stable and unstable manifolds are introduced and their role in geometric and topological configurations of noncommutative ...
Protasov, Igor V.(Editorial Universitat Politècnica de València, 2013-10-01)
[EN] Let G be a group, PG be the family of all subsets of G. For a subset A ¿ G, we put ¿ (A) = {g ¿ G : |gA ¿ A| = ¿}. The mapping ¿ : PG ¿ PG, A ¿ ¿ (A), is called a combinatorial derivation and can be considered as an ...
Yousefian Darani, Ahmad; Motmaen, Shahram(Editorial Universitat Politècnica de València, 2013-10-01)
[EN] Let R be a G-graded commutative ring with identity and let M be a graded R-module. A proper graded submodule N of M is called graded classical prime if for every a, b ¿ h(R), m ¿ h(M), whenever abm ¿ N, then either ...