Hyperintensionality Workshop
2025-05-19 - 2025-05-20 | Edgecliffe 104, University of St Andrews, St Andrews, United Kingdom
This workshop on May 19th will coincide with Shawn Standefer’s (NTU) visit to St Andrews.

10am–11:15am Shawn Standefer: On the Hyperintensionality of Relevant Logics and Some of their Rivals.
11:30am–12:45pm Andrew Tedder: Subalgebras are Good Models of Topic.
2:15pm–3:30pm Franscisca Silva (online): Logicality and Invariance of Subject Matter.
3:45pm–5:00pm Tore Øgaard: subDL is Relevant.

Event organiser: Greg Restall

Unity Seminar:
2025-05-19 12:00 - 14:00 (Europe/London) | Edgecliffe G03

WIKI Seminar:
2025-05-19 15:00 - 17:00 | Edgecliffe G03

Language and Mind seminar: Eklund (2024) Chapter 4
2025-05-20 12:00 - 14:00 | Edgecliffe G03 and via MS Teams

Metaphysics and Logic Seminar: Shawn Standefer, Universal Necessity and Deep Classicality
2025-05-21 15:00 - 17:00 | Edgecliffe G03 and via MS Teams
Abstract: The universal conception of necessity says that necessary truth is truth in all possible worlds. This idea is well studied in the context of classical possible worlds models, and there its logic is S5. The universal conception of necessity is less well studied in non-classical models, and depending on the logic may differ from that of S5. We will present some preliminary results on universal necessity in frames for intuitionistic logic and for relevant logics. We will then present some general results about universal necessity using algebraic methods. This is joint work with Rohan French.

Plenary Seminar:
2025-05-22 10:00 - 12:00 | Edgecliffe G03

Epistemology Seminar:
2025-05-22 13:00 - 14:30 | Edgecliffe G03
Ethan Lai (St Andrews) ‘Fragmentation and personal probabilism’
