还记得我们曾经介绍过的Sierpinski三角形挂饰和Sierpinski饼干吗？iceberg曾经留言说，做一个分形点心会比较有趣，因为你可以宣称“我吃掉了一条无限长的曲线”。这并不是没有可能，Koch雪花就是一个面积有限但边界无穷长的图形。牛B就牛B在，同一个网站今天又更新了，它真的给我们带来了一块Koch雪花小蛋糕：
艺术
（组图）模式、分形与混沌：数学无处不在
史上最牛诗歌：一个停机问题不可判定的证明
SCOOPING THE LOOP SNOOPER
A proof that the Halting Problem is undecidable
Geoffrey K. Pullum
(School of Philosophy, Psychology and Language Sciences, University of Edinburgh)
No general procedure for bug checks succeeds.
Now, I won’t just assert that, I’ll show where it leads:
I will prove that although you might work till you drop,
you cannot tell if computation will stop.
For imagine we have a procedure called P
that for specified input permits you to see
whether specified source code, with all of its faults,
defines a routine that eventually halts.
Now, I won’t just assert that, I’ll show where it leads:
I will prove that although you might work till you drop,
you cannot tell if computation will stop.
For imagine we have a procedure called P
that for specified input permits you to see
whether specified source code, with all of its faults,
defines a routine that eventually halts.
迟到的情人节祝福 Sierpinski Valentine
这几天都和MM在外面，一直没有上网，于是今天一回来就开始恶补欠了好几天的网络信息。看到了xkcd的这个图，很是喜欢，和大家分享一下。
