As in most areas of study, the explosion of knowledge in the scientific age has led to specialization: by the end of the century there were hundreds of specialized areas in mathematics and the Mathematics Subject Classification was dozens of pages long.
就像大部分研究领域一样，科学时代的信息爆炸导致了数学的专门化：在20世纪结束时，有超过上百种数学的专门领域，而数学学科分类标准则长达几十页。