A comprehensive introduction to mathematical structures essential for
Rough Set Theory. The book enables the reader to systematically study
all topics of rough set theory. After a detailed introduction in Part 1
along with an extensive bibliography of current research papers. Part 2
presents a self-contained study that brings together all the relevant
information from respective areas of mathematics and logics. Part 3
provides an overall picture of theoretical developments in rough set
theory, covering logical, algebraic, and topological methods. Topics
covered include: algebraic theory of approximation spaces, logical and
set-theoretical approaches to indiscernibility and functional
dependence, topological spaces of rough sets. The final part gives a
unique view on mutual relations between fuzzy and rough set theories
(rough fuzzy and fuzzy rough sets). Over 300 excercises allow the reader
to master the topics considered. The book can be used as a textbook and
as a reference work.