Nouvelle édition. "This is a reprint of the author's lectures in 1920-21... Since the original lectures the author's methods have grown in popularity,...
Lire la suite
Nouvelle édition. "This is a reprint of the author's lectures in 1920-21... Since the original lectures the author's methods have grown in popularity, first among mathematicians and then among physicits and engineers". Zentralblatt fur Mathematik.