Displaying similar documents to “Equivalenze tra teoremi: il programma di ricerca della reverse mathematics”

Logiche modali con la proprietà del punto fisso

L. Sacchetti (1999)

Bollettino dell'Unione Matematica Italiana

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We introduce various kinds of fixed-point properties for modal logics, and we classify the most prominent systems according to these. Our goal is to do a first step towards a complete characterization of provability logics of (possibly non standard) derivability predicates for Peano Arithmetic.