exercises on recursive definition of set
摘要：
Q1. give a recursive definition for the set of ordered pair of positive intergers, S={(a, b)| a, b are positive intergers, and a|b}Answer:basis step: (1, 1) belongs to S;recursive step: if (a, b)belongs to S, (a, a+b) belongs to S, and (a+1, a+1) belongs to S. 阅读全文
posted @ 2012-07-15 12:13 Torstan 阅读(151) 评论(0) 推荐(0) 编辑
