Some pages are essentially complete, others are perennially under construction.
I add to the pages as I find the time, so check back occasionally to see what has changed. Biographical references on these pages are linked to the History of Mathematics pages at the Mathematical MacTutor archive. An elementary discussion of infinite sets, including both countable and uncountable sets. The Cantor Set A famous and quite curious construction of an infinite set based on the nested interval theorem. An ancient technique for computing square roots that has evolved into an effective computer algorithm for computing all manner of transcendental functions.