Call for 2026 Summer Research Associates
Come spend the summer at the Topos Institute! For early-career researchers, we’re excited to open up applications for our 2026 Summer Research Associate program.
Senior Advisor
Lisa Raphals is Professor of Comparative Literature, cooperating faculty in Philosophy, and Chair, Program in Classical Studies and Program in Comparative Ancient Civilizations at the University of California, Riverside. She is a specialist in philosophy and history of science in early China and Greece, with interests in AI, cognitive science, ethics, and science fiction, and author of six books. Her expertise in these topics informs our work on ethics and technology at Topos.
Today we’re excited to announce the first alpha release of CatColab 0.2: Wren. CatColab is software for making models of the world together.
Today we’re excited to announce the first pre-alpha release of our new software CatColab 0.1: Hummingbird. CatColab is software for making models of the world together.
In the third post of this series about Relational Thinking: from abstractions to applications, we look at the story-telling approach that we took in writing the book.
In the second post of this series about Relational Thinking: from abstractions to applications, we look at the technologies used to build the book.
In the first post of this series, we introduce the freely available online book Relational Thinking: from abstractions to applications, starting with the story of how it came into being and giving a brief overview of its contents.

A follow-up to Algebraic Geometry for the Working Programmer, this post explains a category-theoretic approach to symbolic open dynamical systems.