Dynamite magnate Alfred Nobel omitted mathematics from the final list of categories his prizes would specifically recognize, claiming the prize for physics would cover it. Rumors circulated—likely helped along by the miffed Gösta Mittag-Leffler, Sweden’s leading mathematician—that this was due to a romantic rivalry between Nobel and Mittag-Leffler; the woman had chosen the mathematician, and punishing the whole field was Nobel’s revenge.