• APPROXIMATIONS OF SETS IN TOPOLOGICAL SPACES
Abstract
The classes of near open sets can be considered as rich sources for elementary concepts in approximation spaces. The purpose of this paper is to spot light on using some classes of near open sets as tools for measuring the exactness of sets.
Keywords
Topological space, Topologized approximation space, Exact set, Internally definable set, Externally definable set, Rough set.
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