Abstract
In the paper, the first-order intuitionistic temporal logic sequent calculus LBJ is considered. The invertibility of some of the LBJ rules, syntactic admissibility of the structural rules and the cut rule in LBJ, as well as Harrop and Craig's interpolation theorems for LBJ are proved. Gentzen's midsequent theorem is proved for the LBJ' calculus which is obtained from LBJ by removing the antecedent disjunction rule from it.
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Published in Lietuvos Matematikos Rinkinys, Vol. 40, No. 3, pp. 255–276, July–September, 2000.
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Alonderis, R. Proof-theoretical investigation of temporal logic with time gaps. Lith Math J 40, 197–212 (2000). https://doi.org/10.1007/BF02465129
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DOI: https://doi.org/10.1007/BF02465129