2020年5月8日
A. Hilbert's Hotel
摘要： Hilbert's Hotel is a very unusual hotel since the number of rooms is infinite! In fact, there is exactly one room for every integer, including zero an 阅读全文
posted @ 2020-05-08 17:05 DeaL57 阅读(201) 评论(0) 推荐(0) 编辑