In truth, it is not knowledge, but learning, not possessing, but production, not being there, but travelling there, which provides the greatest pleasure. When I have completely understood something, then I turn away and move on into the dark; indeed, so curious is the insatiable man, that when he has completed one house, rather than living in it peacefully, he starts to build another.

Letter from C. F. Gauss to W. Bolyai on Sept. 2, 1808

from Numerical Mathematics, Springer-Verlag

 最近一直在找ODE的资料,发现二维函数多项式逼近的文献怎么那么不好找啊?目前为止只找到Bernstein多项式,不过只有理论价值不能实用。二维Interpolation倒是有不过感觉也很麻烦的样子。再看两天要是还没有就要考虑要不要用这种方法了。。

开始学Mathematica了,感觉语法有些地方很奇怪,比如说这样的东西
(Sin[#] + Log[#])& /@ {a,b}
输出就是
{Log[a] + Sin[a], Log[b] + Sin[b]}
(不太清楚怎么输代码= =)
反正挺神奇的。正在同步学习Core Language以及目前要用的东西比如ODE解法之类的,不过时间有限进度比较慢就是了= =