Contributions to the theory of rough sets
Fundamenta Informaticae
From Logic to Logic Programming
From Logic to Logic Programming
Rough Sets: Theoretical Aspects of Reasoning about Data
Rough Sets: Theoretical Aspects of Reasoning about Data
The Axiomatization of the Rough Set Upper Approximation Operations
Fundamenta Informaticae
Duality in Rough Set Theory Based on the Square of Opposition
Fundamenta Informaticae - To Andrzej Skowron on His 70th Birthday
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We investigate the operators associated with approximations in the rough set theory introduced by Pawlak in his [14,11] and extensively studied by the Rough Set community [16].We use universal algebra techniques to establish a natural characterization of operators associated with rough sets.