Batch Process in Bash

I make this entry (at 0230) because Joe just asked me how to do it, hence someone else in the world might also want to do it. The quest is, to do something to a large group of files in linux. For example convert a folder of wma files to mp3’s (for this example you […]


GAP: A System for Computational Discrete Algebra

GAP (Groups, Algorithms, Programming) is a program for computational discrete algebra, which is particularly useful for computational group theory. It is a text based computer system which includes a large number of functions that implement various algebraic algorithms. A vast number of these are with regards to groups, using the program you can find the […]


God’s Number is 20

The Rubik Cube was invented by one Erno Rubik in 1974 and has gone one to be one of the most popular puzzles in the world, having sold over 350 million units worldwide, even though many people can not solve one! Although perhaps that isn’t overly surprising given the vast number of possible positions that […]


Hilbert’s Hotel

David Hilbert was a greatly influential mathematician born in 1862. He worked in a variety of areas including infinite sets and it is in this area that he presented his ‘Hotel’, or his ‘paradox of the Grand Hotel’. Which makes the reader consider the infinite. So lets give it a go:


Aspartame: A bit of truth

The motivation for this blog is that I drink quite a lot of Pepsi Max. It is easily my favourite drink. But something that people tell me all the time is how bad it is for me. Not just the fact that it is a cola based product, but because of the sweeterners, mainly “aspartame”.