I am pleased to announce that Frederik Van De Putte (Rotterdam) will give the next talk at TULIPS (The Utrecht Logic in Progress Seminar). This is a hybrid meeting. If you would like to listen to the talk online, please contact the organizers. Details of the talk follow.

Date: January 26th

​Time: 15.30 – 17.00

Location: Ravensteynzaal (Kromme Nieuwegracht 80, room 1.06, Utrecht)

Title: Deontic Game Multiplication, Reduction Theorems, and Acceptability Voids

Abstract: Deontic games are normal form games equipped with a classification of action profiles into those that are acceptable and those that are not. These games have been used in past work to tackle various questions concerning individual and group obligation, group plans and coordination, and methodological individualism. This paper is the first to develop a combinatorial perspective on such games. In particular, we define three ways to combine any two deontic games, resulting in a new game that represents the simultaneous play of both original games. We then study the relation between the deontic status of group actions in the new game and the deontic status of the corresponding sub-actions in the original games, establishing a number of fundamental reduction theorems. From these, we derive several corollaries concerning the existence of acceptability voids in interaction scenarios.

On behalf of the organizers,
Rosalie Iemhoff,
Johannes Korbmacher,
and Colin Caret