# Useful things

## Research

You might want to see my papers on the ArXiv. x ## Sheffield semester dates

Here is a zipped PHP library for Sheffield semester dates (preloaded with the years 2014-2024). I have found it useful for course webpages.

## Octrees

I wrote a simple octrees library in Python.

## Sparse Ramsey Theory

In 2003 I wrote up some notes on sparse Ramsey theory from a lecture course by Imre Leader, which serve as a useful introduction.