@ARTICLE { Rsds38784,
author = { Pulak, Samanta and  Mihir Kumar, Chakraborty}, 
title = {Interface of Rough Set Systems and Modal Logics: A Survey}, 
journal = {Transactions on Rough Sets XIX}, 
publisher = {Springer}, 
month = {01}, 
year = 2015, 
abstract = {AbstractIn this paper the relationship between rough set theory and modal logic has been discussed. Pawlakian rough set theory has obvious connection with modal logic system $$S_5$$. With the introduction of various other lower and upper approximation operators, other modal systems come into picture. Besides, the possibility of new modal systems also crop up. Some of these issues are focused here.}, 
keywords = {Approximations of sets, covering, covering, granules, implication lattice, modal logic, modal logic, partition, Rough logic, rough sets, rough sets, }, 
}