Abstract
In this Chapter, we discuss algebraic structures induced in collections of rough sets and we present two logical structures, rooted respectively in intuitionistic and modal logics, which reflect properties of indiscernibility and tolerance relations that arise in the attribute¡ªvalue formalization of information systems. The foundations for this discussion were laid in the papers [Pawlak 81b, 82b, 87], (Orlowska—Pawlak 84a,b].
Certes, a shadwe hath the likeness of the thing of which it is shadwe, but shadwe is nat the same thing of which it is shadwe
Chaucer, The Canterbury Tales, The Parson’s Tale
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Polkowski, L. (2002). Algebra and Logic of Rough Sets. In: Rough Sets. Advances in Soft Computing, vol 15. Physica, Heidelberg. https://doi.org/10.1007/978-3-7908-1776-8_12
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DOI: https://doi.org/10.1007/978-3-7908-1776-8_12
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