Most detailed explanation in the blogosphere is "Why Stuff is Hard" by Jim Pivarski, http://cornellmath.wordpress.com/2007/08/08/why-stuff-is-hard/ http://corn

Most detailed explanation in the blogosphere is "Why Stuff is Hard" by Jim Pivarski, http://cornellmath.wordpress.com/2007/08/08/why-stuff-is-hard/ http://cornellmath.wordpress.com/2007/08/08/why-stuff-is-har... http://cornellmath.wordpress.com/2007/08/11/why-everything-is-hard/ http://cornellmath.wordpress.com/2007/08/11/why-everything-i... http://cornellmath.wordpress.com/2007/08/11/why-everything-is-hard/#comment-253 http://cornellmath.wordpress.com/2007/08/11/why-everything-i... Complete argument is the Dyson, Lieb and Thirring's proof of stability of matter, http://projecteuclid.org/euclid.bams/1183555452 http://projecteuclid.org/euclid.bams/1183555452 .