the pigeonhole principle is a powerful tool used in combinatorial math.
鸽子洞原理是分析数学组合的有力工具。
the pigeonhole principle is a important principle in combinatorics.
鸽巢原理是组合学中一个非常重要的原理。
the pigeonhole principle is a powerful tool used in combinatorial math. but the idea is simple and can be explained by the following peculiar problem.
鸽子洞原理是分析数学组合的有力工具。但是其概念简单,可以通过以下具体的问题加以阐述。
there is another version of the pigeonhole principle that comes in handy.
另外一种版本的鸽子洞原理迟早也能碰到。
this paper describes three questions; that is, the mapping background of pigeonhole principle by using the corresponding relation between different sets;
利用集合间的对应关系阐述了鸽笼原理的映射背景;
the pigeonhole principle states that if more than n pigeons are placed into n pigeonholes, some pigeonhole must contain more than one pigeon.
鸽子洞原理认为,如果有超过n只鸽子要放入n个鸽子洞中,有一些鸽子洞就要装进2个以上的鸽子。
thus, the pigeonhole principle implies at least two wordpress.com blogs must have the same number of yearly comments.