Na Seminaru za matematičku logiku i osnove matematike, u ponedjeljak 11. siječnja 2021. u 17:15 sati,

Zoran Ognjanović (Matematički institut SANU) će održati predavanje

Abstract: We demonstrate probability logics whose languages include

probability operators. Intuitively, probability operators are used to

formalize statements of the form "the probability of a formula is equal

to or greater than s" or "the probability of a formula belongs to a set S".

These operators possess qualities reminiscent of modal operators,

and their semantics is captured by Kripke-like models with possible

worlds. Instead of the typical accessibility relation, probabilities over

sets of worlds are considered. Due to non-compactness, which normally

holds for the logics we consider, axiomatizations with infinite rules are

given and admit corresponding theorems of strong completeness.

We discuss the decidability of probability logics.