How Big is Infinity?
The 20 Big Maths Questions
What is mathematics for, and where do numbers come from? Beginning with those fundamental questions, this accessible book introduces the work of history's greatest mathematical minds, from Pythagoras and Euclid to Fermat and Gödel, as well as setting out the perplexing problems which cutting-edge research is still trying to solve, such as the Riemann hypothesis. Previously published as The Big Questions: Mathematics.