Dear all,

Welcome back after the summer break!

We will start into the new academic year with our first LIRa session next week Thursday, 15 September at 16:30.

This will be a *hybrid* session. You are invited to join us on location, or you may attend online using this (new!) zoom link: https://uva-live.zoom.us/j/89230639823?pwd=YWJuSnJmTDhXcWhmd1ZkeG5zb0o5UT09 (Meeting ID: 892 3063 9823, Passcode: 421723)

You can find the details of the talk below.

Speaker: Zoé Christoff (University of Groningen)

Date and Time: Thursday, September 15th 2022, 16:30-18:00

Venue: room F1.15 at ILLC (NIKHEF building) and online / hybrid

Title: Reasoning about Cascading Ability in Social Networks

(joint work with Thomas Ågotnes)

Abstract. We propose a coalition logic to reason about the power of influence of groups of agents in social networks. We focus on threshold models, where agents are influenced into adopting a new product or behaviour as soon as enough of their direct network-neighbours have adopted it already. We introduce the syntax and semantics and illustrate how it captures the ability of (groups of) agents to trigger cascading effects in the network. We discuss some properties featured by the new logic, some of which are directly inherited from the underlying standard Coalition Logic, and some that are novel.

Hope to see you there!

The LIRa team