Christian Lawson-Perfect's homepage.

Hello!

My name is Christian Lawson-Perfect. This site exists to link to all my doings around the web.

If you want to email me, you can! My email address is christianperfect@gmail.com. Like most people, I am especially open to receiving friendly emails.

clp

I'm one of three editors of The Aperiodical, a maths news/magazine blog.

I write about mathematical musings, odd papers I've found, arty maths, and I have an ongoing obsession with nonsense formulas in the news.

My Aperiodical Round Up is a work of… something.

My older, personal blog is at checkmyworking.com.

It began as a place to put my research notes; I don't update it much any more, but stuff that isn't quite in the remit of The Aperiodical occasionally goes here.

A collection of papers, books, essays and poems that I find interesting entirely on their own merits. It's mainly bits of esoteric maths that I like to tell other people about, with references to the original papers so I can get it right after I half-remember the details.

I'm e-learning officer in the School of Mathematics and Statistics.

Most of my job involves writing the maths e-assessment system, Numbas.

I publish lots of stuff on GitHub.

I made this tool to have a quick way of rendering LaTeX, using MathJax.

I use it all the time, to check a command exists, or to see how something will look.

A plugin to add instant MathJax rendering of LaTeX to text areas and TinyMCE editors.

Because I like buying novelty domain names, and because I wanted to do something for Pi Day.

An infinitely scrolling list of the decimal digits of π.

Another domain name bought on a whim. It tells you whether a given number is prime or not.

There's also the "Is this prime?" game, which took small portions of the internet by storm.

I am available to make interactive thingies for maths talks and the like.

Here's an incomplete list of things I've made in the past:

- Building houses puzzle
- Spot the Error
- Interactive Puzzlebombs: 51, 54, 55
- Hexaflex yourself
- Droste Dobble
- Punchcards
- 30 second arithmetic challenge
- Pancake flipping puzzle
- Nail painting puzzle
- A complete state diagram of a tennis match
- Princess in a castle puzzle
- Clever Hans the counting horse
- Sierpinski dots
- Plot of the Riemann Zeta function
- The great intersectionator
- Wordsearch generator
- Regex fractals

Small bits of code to answer questions I come up with.