On the union and intersection operations of rough sets based on various approximation spaces

X Zhang, J Dai, Y Yu - Information Sciences, 2015 - Elsevier
Algebraic structures and lattice structures of rough sets are basic and important topics in
rough sets theory. In this paper we pointed out that a basic problem had been overlooked …

On the union and intersection operations of rough sets based on various approximation spaces

X Zhang, J Dai, Y Yu - Information Sciences—Informatics and Computer …, 2015 - dl.acm.org
Algebraic structures and lattice structures of rough sets are basic and important topics in
rough sets theory. In this paper we pointed out that a basic problem had been overlooked …

On the union and intersection operations of rough sets based on various approximation spaces

X Zhang, J Dai, Y Yu - Information Sciences, 2015 - infona.pl
Algebraic structures and lattice structures of rough sets are basic and important topics in
rough sets theory. In this paper we pointed out that a basic problem had been overlooked …