about me

I am a postdoctoral researcher on Epistemic Logic and Social Epistemology at the Department of  Philosophy of the University of Bayreuth, as a member of the project “From Shared Evidence to Group Attitudes (SEGA)” led by Olivier Roy.

My research lies at the interface between logic, social epistemology, judgment aggregation theory, and network theory, but I’m also interested in modal logics, graph theory, social choice theory, formal learning theory, self-reference problems, foundations of mathematics and limitative results in logic.


Until the end of 2016, I was Research Associate at the Department of Computer Sciences of the University of Liverpool, as a member of Davide Grossi‘s project “Foundations of Opinion Formation in Autonomous Systems”, where we started bridging judgment aggregation theory and social network analysis (see a draft of our paper).

Zoe Christoff -PhD Thesis Cover - front

My PhD thesis, Dynamics Logics of Networks: Information Flow and the Spread of Opinion, applies tools from dynamic logics to collective behavior and diffusion in social networks. It was written under the supervision of Johan van Benthem and Sonja Smets at the Institute for Logic, Language and Computation (ILLC), University of Amsterdam. The thesis focuses on information and opinion dynamics in social contexts.

CfBk03QXIAE83dpThe first half introduces logical modeling of social phenomena involving correlated opinions in groups, such as informational cascades (see my paper) and pluralistic ignorance (see my paper). For an informal introduction to my work on collective failures, see this interview for newspaper Trouw (in Dutch).

The second half focuses on diffusion processes in networks, from different angles. First, I propose a general logical framework to reason about diffusion (see my paper). Second, I model how knowledge of the network interferes with diffusion in threshold models (see a draft of the extended version). Third, I investigate from a logical perspective, how network structures constrain diffusion dynamics in the limit (papers in preparation).

Before my PhD in Amsterdam, I worked as a Teaching Assistant in Logic at the Philosophy Department of the University of Geneva where I obtained my MA in Philosophy under the supervision of Pascal Engel, Fabrice Correia and Kevin Mulligan. Aside from logic and philosophy, I studied French literature and Romance languages during my BA. I’m also a passionate classical dressage horse rider.