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In this paper, four tense operators E, F, G, H, are introduced into LP(X), then extend a lattice-valued propositional logic system to lattice-valued tense propositional logic system LTP(X). In this system, some definitions including generalized literal, T-skolem standard form, are given out. Based on these work, several conclusions about resolution deduction are got. Finally, alpha-soundness theorem...
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