机构地区: 河源职业技术学院
出 处: 《内江师范学院学报》 2009年第10期21-25,共5页
摘 要: 研究了限距组合,定义了定元限距组合、环状定元限距组合,并运用母函数、乘法原理和加法原理等计数技巧,给出了与这两类组合有关的一系列计数公式. By studying bound combination, the bound combination with fixed elements and the cirle bound combination with fixed elements are both defined. By use of generating function and counting techniques like principle of addition and principie of multiplication, a series of counting formulas for the bound combination with fixed elements and the cirle bound combination with fixed elements is listed.