Published: May 9, 2026
A Single Axiom for Matroid Closure Operators
This note states that a single equation for a map on a finite set characterises the closure operator of a matroid.
matroid theoryclosure operatorresearch note
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Short articles, notes, and experimental web apps on coding theory, matroid theory, and combinatorics.
Articles and Notes
Expository notes and small calculations that are useful to keep public, with TeX kept as the source of truth.
Math Web Apps
Web apps for trying concepts and calculations from the field.
Characteristic and Weight Quasi-Polynomial Calculator
A web app for experimenting with computations of characteristic and weight quasi-polynomials for integer matrices, exposed through this site's app URL.
quasi-polynomialsweight quasi-polynomialsinteger matricesinteractive
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