摘要
针对一类偏序关系的记数,根据其特征将其转化为一类不定方程组的非负整数解的个数,利用母函数的方法得到了解的递推公式及其组合意义,并给出了与之联系的有趣的三角形数表。
A relation of equivalence on a finite set is discussed, and it is transformed into the number of solutions of an indefinite system of equations. Formula and their combinatorial meaning of nonnegative integral solution of such equations are given.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2004年第3期334-337,共4页
Journal of University of Electronic Science and Technology of China
关键词
半序集
不定方程组
非负整数解
规划解
partially ordered set
indefinite equation
nonnegative integral solution
programming solution