23/07/09 21:09:24.13 QIau7gv8.net
Banach-Steinhausの一様有界性定理は初級関数解析のコースで
威容を誇っている。
According to his student and biographer, Mark Kac, Steinhaus told him that the happiest day of his life were the twenty four hours between the time that the Germans left occupied Poland and the Soviets had not yet arrived ("They had left, and they had not yet come").