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This note contains a corrected proof of the main result (which remains unchanged) from [K-T]. It was recently observed that an argument in a basic technical criterium has a gap. The first named author recently observed that the paper by Komorowski and Tomczak [K-T], contains a gap. Here we shall correct the formulation of a general result (Theorem 2.1 in(More)
The talk presents some results appearing in papers [1, 2, 3]. We study lattice structures of rough approximations and rough sets determined by indiscernibility relations which are not necessarily reflexive, symmetric or transitive. Any map f between two complete lattices has an adjoint g, and the pair (f, g) is a Galois connection, if and only if f is a(More)
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