THERE are several parts of the science of physics which appear very simple when expounded briefly in elementary text-books, but nevertheless present great difficulties when examined more carefully. A ...
THE first edition of Dr. Feldman's book appeared in 1923 and filled a serious gap in mathematical literature. It has now been out of print for some years, and a new edition is to be warmly welcomed, ...
Excerpted with permission from Our Mathematical Universe: My Quest for the Ultimate Nature of Reality, by Max Tegmark. Available from Random House/Knopf. Copyright ...