The Scandinavian Logic Society

The 2022 Lindström Lectures: Prof Sara Negri

After a two year hiatus, it is a great pleasure to announce the 2022 Lindström Lectures will be given by Prof Sara Negri. The Lindström Lectures is an annual lecture series established in 2013 to celebrate the singular achievements of Per Lindström, former professor of logic at the department. As per tradition, Prof Negri will give two lectures: a public lecture on Monday, 20 June and a research lecture on Wednesday, 22 June. Both lectures will be held at the University of Gothenburg (Department of Philosophy, Linguistics and Theory of Science). Details of both talks below.

Attendance to both events is free.

Read more about the Lindström Lectures
Read more about Per (Pelle) Lindström

Public Lindström Lecture

Sara Negri (University of Genoa): Syntax and semantics in synergy
Monday, 20 June 2022 at 18:00 to 20:00 (CEST)

Syntax and semantics, often considered as conflicting aspects of logic, have turned out to be intertwined in a methodology for generating complete proof systems for wide families of non-classical logics. In this formal semantics, models can be considered as purely mathematical objects with no ontological assumptions upon them. More specifically, by the “labelled formalism”, which now is a well-developed methodology, the semantics is turned into an essential component in the syntax of logical calculi. Thus enriched, the calculi not only constitute a tool for the automatisation of reasoning, but can also be used at the meta-level to establish general structural properties of logical systems and direct proofs of completeness up to decidability in the terminating case. The calculi, on the other hand, can be used to find simplified models through conservativity results. The method will be illustrated with gradually generalised semantics, including topological ones such as neighbourhood semantics.

Research Lindström Lecture

Sara Negri (University of Genoa): On modal embeddings
Wednesday, 22 June 2022 at 10:00 to 12:00 (CEST)

Motivated by the difficulty in proving faithfulness of various modal embeddings (starting with Gödel’s translation of intuitionistic logic into S4), we use labelled calculi to obtain simple and uniform faithfulness proofs for the embedding of intermediate logics into their modal companions, and of intuitionistic logic into provability logic, including extensions to infinitary logics.