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Book Reviews |
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| Authors: | P D Welch |
| Institution: | (1) Department of Philosophy, Brooklyn College City University of New York, 2900 Bedford Avenue, Brooklyn, NY 11210, USA |
| Abstract: | Interpreting the diamond of modal logic as the derivative, we present a topological canonical model for extensions of K4 and show completeness for various logics. We also show that if a logic is topologically canonical, then it is relationally canonical. |
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