Abstract:
The main concept of this work is to generate and investigate second lower and upper approximations of ? combined edges systems as well as second lower and upper approximations operators of ? using incident edges systems (as opposed to second lower and upper approximations of ? using non incident edges systems). In addition, we utilized Using (incident, non-incident, and combined) edges systems, the second accuracy of the approximation of a subund. g. ??? is explored, along with some of its properties.
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