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Modal definability based on Łukasiewicz validity relations
Published 11 Feb 2015 in math.LO | (1502.03299v2)
Abstract: We study two notions of definability for classes of relational structures based on modal extensions of {\L}ukasiewicz finitely valued-logics. The main results of the paper are the equivalent of the Goldblatt - Thomason theorem for these notions of definability.
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