Endomorphic structures of approximation operators Online publication date: Fri, 18-Oct-2013
by Guilong Liu; Wenyi Fei
International Journal of Granular Computing, Rough Sets and Intelligent Systems (IJGCRSIS), Vol. 3, No. 2, 2013
Abstract: This paper studies endomorphic structures of rough approximation operators. We present the necessary and sufficient conditions for the rough lower and upper approximation operators to be either lattice endomorphisms, monomorphisms, or automorphisms. We also consider the same problems in fuzzy rough sets and obtain similar results.
Online publication date: Fri, 18-Oct-2013
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