十二 30
最初从好友费振鹏的鹏博奥数网那发现此图,觉得很好,Google到了International Mathematical Olympiad那,Here!The IMO logo is available in several graphic formats.
顺便再次推荐振鹏的鹏博奥数网,那有很多IMO相关的资料。
On this day..
- 摆线系 - 2013
- Five Intersecting Tetrahedra - 2010
- 2010备考方案及应试策略 - 2009
- 活着演戏,死也传奇! - 2003
12月 30th, 2008 at 12:15
http://www.omaths.com/Article/UploadFiles/200811/2008112806541286.gif