01107nam a2200205Ia 4500 CTU_221933 210402s9999 xx 000 0 und d 513 K17 Kaplan, Robert The nothing that is : A natural history of zero Robert Kaplan ; illustrations by Ellen Kaplan London The Penguin Press 1999 Contents: A symbol for what is not there, an emptiness that increases any number it's added to, an inexhaustible and indispensable paradox. As we enter the year 2000, zero is once again making its presence felt. Nothing itself, it makes possible a myriad of calculations. Indeed, without zero mathematics as we know it would not exist. And without mathematics our understanding of the universe would be vastly impoverished. But where did this nothing, this hollow circle, come from? Who created it? And what, exactly, does it mean? Zero (The number),Zero (Số) Tô Chánh Trung Trung tâm Học liệu Trường Đại học Cần Thơ