Welcome to the home of Simon, the website is currently being restructured after a long absence.
Some cool stuff:
ludum dare, ldjam
Some math stuff:
Elementery Theory of Category of Sets
Convolutions and Approximate Identities
Permutations and Genome Rearrangements
A Categorical Formalism for Encryption and Quantum Teleportation
Numerical Experiments on Deep Neural Network Function Approximation
To my students: Enjoy!