К вопросу об обратной математике модальной логики.


A.V. Chagrov


The problem o f eliminability o f Axiom o f Choice from the metatheoiy o f propositional modal logics is dicussed. Using o f the language o f modal formulas is proposed. Three examples o f applications o f this language are given: the Blok's theorem on the degree o f incompleteness; a logic without immediate predecessors; the finite axiomatizability o f tabular logics.






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