Notes on Discrete Mathematics
August 11th, 2005 by sigfpeThere’s a nice little trove of lecture notes on discrete mathematics here. The emphasis is on design theory but other topics are covered too. Design theory isn’t the biggest area in mathematics but the design S(5,8,24) has many interesting properties which have echoes through many branches of mathematics via its connections with certain sporadic simple groups , the Leech lattice and hence subjects like modular forms.