数学与红学,一向被人们认为是风马牛不相及的两个学科。人大一分校何蕴理同志用数学方法从事红学研究,沟通了两者之间的联系,取得了成果。《红楼梦》人物关系错综复杂,但是从数学的观点来看,却杂而不乱。用图论做工具,可以建立起一套完整的理论体系,理顺《红楼梦》一书中所有人物的全部亲眷关系。图论是一个新兴的数学分支。利用图论研究《红楼梦》人物的亲眷关系,不但清晰直观,而且还能借助于图的运算,得出一些单纯用文字所不易得到的的结论。如:从为数众多的亲上作亲关系中,筛选出实用价值较大的优化关系来;引入血缘系数和亲疏度的概念,使对人物关系由定性分析发展到定 Mathematics and Redology have always been regarded as two disciplines that are irrelevant. People’s Congress, a division of Comrade Ho Yun-li used mathematical methods in the study of Red Clifford, the communication between the two, and achieved results. The relationship between characters in A Dream of Red Mansions is complicated, but from a mathematical point of view, it is mixed but not arbitrary. With graph theory as a tool, you can establish a complete set of theoretical system, straighten out all the characters in the book “A Dream of Red Mansions” all pro-family relationship. Graph theory is a new branch of mathematics. Using graph theory to study the relatives and dependents of the characters in “A Dream of Red Mansions” is not only clear and intuitive, but also draws some conclusions that are difficult to get by simple words by means of graph operations. For example, from a large number of close relatives, we can select the optimal relationship with greater practical value. By introducing the concept of kinship coefficient and degree of familiarity, the relationship between characters can be developed qualitatively