Saturday 17 August 2019 |

Events for day: Thursday 21 February 2019 |

10:00 - 11:00 Weekly SeminarChoice under uncertainty School BIOLOGICAL SCIENCES ClassA, Grand Floor, Farmanieh Building ... 14:00 - 16:00 Mathtematical Logic Weekly SeminarProvability Logics of Hierarchies School MATHEMATICS Provability logic investigates the provability behavior of the mathematical theories. In a more precise way, it studies the relationship between a mathematical theory $T$ and a modal logic $L$ via the provability interpretation which interprets the modality as the provability predicate of $T$. In this talk we will extend this relationship to investigate the provability behavior of a hierarchy of theories. More precisely, using the modal language with infinite many modalities, ${Box_n}_{n=0}^{infty}$, we will define the hierarchical counterparts of some of the classical modal theories such as $mathbf{K4}$, $mathbf{KD4}$, $mathbf{GL}$ and $math ... |