摘要
证明了正整数n分为m部分互不相同的无序分拆数Q(n,m)是不定方程x1+2x2+…+mxm=n的正整数解数;利用将正整数n分为m部分的无序分拆数P(n,m)与Q(n,m)的关系,以及已有的P(n,4)的显表达式和关于不定方程x1+2x2+…+5x5=n的非负整数解数A(n,5)的显表达式,给出了Q(n,4)与Q(n,5)的显式表达式.从而给出了不定方程x1+2x2+3x3+4x4=n和x1+2x2+3x3+4x4+5x5=n的正整数解数的显表达式.
In this paper, it is proved that the number of positive integral solutions to the diophantine equations x1+2x2+…+mxm=n , which is the unordered partition number of the positive integer n into m distinct parts. The explicit formulations for Q (n ,4) and Q (n ,5 ) are given from the relationship between 0 (n, m) and P( n, m) (the unordered partition number of positive integer n into m part) as well as the explicit formulation of P( n ,4 ) and A (n ,5 ) (the number of nonnegative integral solutions to the diophan- tine equation x1+2x2+……+5x3=n . Therefore the explicit formulations for the number of positive integral solutions for the diophan- tineequationsx1+2x2+3x3+4x4=n n and x1+2x2+3x3+4x4+5x5=n nareobtained.
出处
《四川师范大学学报(自然科学版)》
CAS
CSCD
北大核心
2006年第2期197-199,共3页
Journal of Sichuan Normal University(Natural Science)
基金
四川省青年基金
四川省教育厅自然科学重点基金资助项目
关键词
分拆
互不相同的分拆
不定方程
正整数解数
显表达式
:Partition
Partition with distinct part
Diophantine equation
Number for positive integral solution
Explicit formulation