The main purpose of this paper is to study normed hypervector spaces. We generalize some definitions such as basis, convexity, operator norm, closed set, Cauchy sequences, and continuity in such spaces and prove some theorems about them.

the concept of  -semihypergroups is a generalization of semigroups, a generalization of semihypergroups and a generalization of  -semigroups. in this paper, we study the concept of semiprime ideals in a  -semihypergroup and prove some results. also, we introduce the notion of  -hypergroups and closed  -subhypergroups. finally, we study the concept of  -semihypergroups associated to binary...

In this paper, we discuss generating theorems of polyhedral quadrangulations closed surfaces. We prove that the set eight reductional operations {R1, …, R8} defined for is finitizable any surface F2, is, there exist finitely many minimal F2 using such R1, R7 and R8. Furthermore, show proper subset not torus.

Real-world applications now deal with a massive amount of data, and information about the world is inaccurate, incomplete, or uncertain. Therefore, we present in our paper proposed model for solving problems. This based on class locally generalized closed sets, namely, simply* alpha closed* sets closed** (briefly, -sets -sets), open set. We also introduce various concepts their properties relat...

We consider union-closed set systems with infinite breadth, focusing on three particular configurations ${\mathcal T}_{\rm max}(E)$, min}(E)$ and ort}(E)$. show that these are not isolated examples; in any given system of at least one will occur as a subprojection. This characterizes those which have is the first general structural result for such systems.