Ed Morehouse

Ed, on the rocks


mailing address

Department of Mathematics and Computer Science
Wesleyan University
Middletown, CT
06459 USA


emorehouse ∀⊤ wesleyan ∙ ∃∂∪


I am a postdoc in the Department of Mathematics and Computer Science at Wesleyan University, where I teach and study categorical semantics of formal systems.

Between 2013 and 2016 I was a postdoc with Bob Harper and the Principles of Programming Group in the Computer Science Department at Carnegie Mellon University, where I worked on computational aspects of Homotopy Type Theory.

research interests

I am interested in what category theory, type theory and proof theory can learn from one another.
I believe that categorical semantics can be quite helpful in clarifying the algebraic principles governing the properties of formal systems, which can lead us to useful insights into program development and proof search.


or perhaps you were looking for my most influential work: Burritos for the Hungry Mathematician (April 1, 2015)

notes, slides, code, etc.


Last year I taught COMP 112: Introduction to Programming and MATH 402: Category Theory.

Prior to that I taught COMP 360: Quantum Information Systems.

In 2015 and 2016 I taught category theory at the Oregon Programming Languages Summer School.

In 2010 I taught math readiness and art and practice of mathematics at Saint Mary's College in California.

As a graduate student I taught introduction to calculus and served as teaching assistant for linear algebra, discrete math, mathematical logic, automata theory, programming languages and several introductory programming courses.


I enjoy being outside. In most years of graduate school I helped organize a fall-break trip for graduate and visiting international students. Most recently, we went hiking in Acadia National Park.

In 2008 I was elected to the educational policy committee of my university. Now I have a much deeper appreciation for the mundane but difficult work that goes into making possible all the visible aspects of the functioning of the institution. It felt a bit like when I took a summer job at Universal Studios as an undergraduate.

I have been an unenthusiastic user of LaTeX for a few years now. Lately I have become a somewhat more enthusiasic user of XeTeX and Will Robertson's excellent fontspec and unicode-math packages, which save me loads of typing and clutter. I have written a keyboard layout for Macintosh with the mathematical symbols that I use most often. This gets changed around and expanded pretty frequently, but you're free to use it and adapt it to your own needs. Suggestions are also welcome.

what's that funny wiggle?