Lunchmaths is a series of fun mathematics lectures, intended to be accessible and of interest to undergrads with a minimum of maths background. Bring along your sandwiches. Tea/Coffee provided.
 

Ambigrams are calligraphic designs that have several interpretations as written words. For example the above half-turn ambigram of the word mathematics reads the same the right side up and upside-down.

This is your chance to see everybody's favourite mathematical terms turned into beautiful calligraphic designs displaying unusual geometric symmetries, magic squares and other mathematical puzzles that incorporate an additional ambigrammatic dimension, and, in general, wonderful fusions of ambigrams with other worlds of ambiguity and wordplay.