This Semester
- 9/27 Logic Colloquium: Yale Weiss (CUNY)
Logic Colloquium: Yale Weiss (CUNY)
Friday, September 27th, 20242:00 PM - Hybrid: SHH 110 & Zoom
Join us for a talk in the Logic Colloquium by
Yale Weiss (CUNY Graduate Center):
“A relevant framework for barriers to entailment”
In her recent book, Russell (2023) examines various so-called “barriers to entailment”, including Hume’s law, roughly the thesis that an ‘ought’ cannot be derived from an ‘is’. Hume’s law bears an obvious resemblance to the proscription on fallacies of modality in relevance logic, which has traditionally formally been captured by the so-called Ackermann property. In the context of relevant modal logic, this property might be articulated thus: no conditional whose antecedent is box-free and whose consequent is box-prefixed is valid (for the connection, interpret box deontically). While the deontic significance of Ackermann-like properties has been observed before, Russell’s new book suggests a more broad-scoped formal investigation of the relationship between barrier theses of various kinds and corresponding Ackermann-like properties. In this talk, I undertake such an investigation by elaborating a general relevant bimodal logical framework in which several of the barriers Russell examines can be given formal expression. I then consider various Ackermann-like properties corresponding to these barriers and prove that certain systems satisfy them. Finally, I respond to some objections Russell makes against the use of relevance logic to formulate Hume’s law and related barriers.
https://logic.uconn.edu/calendar/
All welcome!
- 10/4 ELM2 Conference Day 1
- 10/5 ELM2 Conference Day 2
- 10/6 ELM2 Conference Day 3
- 11/15 Logic Colloquium: Zeynep Soysal (Rochester)
Logic Colloquium: Zeynep Soysal (Rochester)
Friday, November 15th, 20242:00 PM - 3:30 PM Hybrid: SHH 110 & Zoom
Join us in the Logic Colloquium for a talk by Zeynep Soysal (Rochester)!
Details t.b.a.
