我国著名数学家徐利治教授在他的专著《数学抽象度概念与抽象度分析法》中 ,对数学抽象与数学抽象度分析法有着精辟的论述 ,“所谓弱抽象 ,也可以称做概念扩张式抽象 ,即以原型中选取某特征 (侧面 )加以抽象 ,从而获得比原结构更广的结构 ,使原结构成为后者的特例 .”“一般说 Professor Xu Lizhi, a famous mathematician in China, in his monograph “Analysis of Mathematical Abstractness and Abstractness,” has an incisive exposition of mathematical abstraction and mathematical abstraction analysis. “The so-called weak abstraction can also be called concept expansion. Abstraction, that is, abstracting a certain feature (side) from the prototype, so as to obtain a wider structure than the original structure, so that the original structure becomes a special case of the latter.” "Generally speaking,