Mathematician. Springer-Verlag. (自传) 1987年 I Have a Photographic Memory. Mathematical Association ofAmerica. 1991年 《給數學家的問題,不管你是新手還是老油條》 Problems for Mathematicians
of society. Within a culture, there may be subcultures made up of specific groups that are somewhat separate from the rest ofsociety because of distinct