通过google定期搜索自己相关的关键词来查看相关的信息逐渐成为自己的习惯。除了搜索到自己关心的关键资料，时常还有所意外的收获：）
在美国数学协会/MAA.ORG上搜索qiu fawen
竟然发现MAA上有引用了我们研究成果的文章！

A completely different kind of butterflies was discovered in 1997 by Qiu FaWen, a Chinese mathematics and physics teacher, and his students with the aid of Geometer's Sketchpad. In a recent letter Qiu FaWen pointed me to a web page where he established the existence of a 4-wing butterfly — a proper Lepidopteran. A paraphrase of his result is now available in English. Due to the exact (4) number of wings expected from a regular butterfly, I feel it appropriate to call Qiu FaWen's result A Better Butterfly Theorem. The letter was followed by another communication — a Geometer's Sketchpad file — in which the existence of 2N-wing butterflies has been demonstrated

从最开始的a butterfly ,more butterflies,butterfly garden...

http://www.qiusir.com/report2000/广义蝴蝶定理.htm

http://www.qiusir.com/students/spapers/hudie/hudie.htm

http://www.cut-the-knot.org/pythagoras/BetterButterfly.shtml

http://www.maa.org/editorial/knot/lepidoptera.html

世界第一张数学蝴蝶图谱：http://www.qiusir.com/show.asp?id=1632
发现蝴蝶创造蝴蝶解放蝴蝶：http://www.qiusir.com/bbs/dispbbs.asp?BoardID=43&replyID=7439&id=2126&skin=0

http://140.111.115.8/longlife/logo/butterfly.jpg

http://www.maa.org/editorial/knot/lepidoptera.html
我们的蝴蝶被台湾的同行收藏，美国的同行翻译引用，眼下出现在MAA,这是非常值得我们骄傲的事情。
在国内让更多人了解/看懂并喜欢数学蝴蝶还有很多的工作要做。
也正是通过对于蝴蝶定理的研究推广让自己更确信“知识的本身包括知识的传播。”

On this day..

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• 诚实对待自己 - 2004
• 虚拟的“贺礼”不虚拟 - 2003
• 网络年度评选的意义 - 2003
• 学习生活化知识网络化 - 2002