Titlebook: Rough Sets; Mathematical Foundat Lech Polkowski Textbook 2002 Springer-Verlag Berlin Heidelberg 2002 Fuzzy Set Theory.Fuzzy Sets.Mathematic

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Textbook 2002 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

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Logical Theory of Approximations propositional calculus was recognized as a legitimate subject of independent study by the Stoic school. But such had been the case with the system of logic created by Aristotle of Stagira and known as .. One of reasons seems to be that propositional calculus was used by Aristotle intuitively, as a

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