A jump system is a set of integer points with an exchange property, which is a generalization of a matroid, a delta-matroid, and a base polyhedron of an integral polymatroid (or a submodular system). Recently, the concept of M-convex functions on constant-parity jump systems is introduced by Murota as a class of discrete convex functions that admit a local criterion for global minimality. M-con...

The study addressed the economic comparison of the achievements of Fadama III agricultural enterprises in the Niger Delta Area of Nigeria using task-target performance approaches. It aimed at identifying the indicators, tasks and targets and achievement of Fadama III. Some materials used were secondary information collected from the various Fadama III project offices. Simple random sampling tec...

‎in this paper, a new class of fuzzy sets called fuzzy strongly ${{g}^{*}}$-closed sets is introduced and its properties are investigated. moreover, we study some more properties of this type of closed spaces.