A review of Timothy Gowers's book 'Mathematics: A Very Short Introduction'
The presented LaTeX snippet is full of magic, but it will solve your 'Package multicol Warning: Floats and marginpars not allowed inside `multicols' environment!' problem for sure
· ∞Solution: Just remove and add all the spaces again
· ∞A GreaseMonkey script that allows you to get the TeX source behind a formula on Wikipedia.
In which I explain why I decided to change everything, again.