<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[xavier0的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/xavier0</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; xavier0]]></copyright><item><title><![CDATA[MIT 线性代数]]></title><link>https://blog.youkuaiyun.com/xavier0/article/details/50987991</link><guid>https://blog.youkuaiyun.com/xavier0/article/details/50987991</guid><author>xavier0</author><pubDate>Sat, 26 Mar 2016 17:51:28 +0800</pubDate><description><![CDATA[vedio 9Suppose A m by n while m < n, then there are nonzero solutions to AX = 0. 
Reason: There will be free variables. (rank < n) 
When v1,…,vnv_1,…, v_n are columns of A, they are independent if null]]></description><category></category></item><item><title><![CDATA[MIT折纸算法]]></title><link>https://blog.youkuaiyun.com/xavier0/article/details/50986337</link><guid>https://blog.youkuaiyun.com/xavier0/article/details/50986337</guid><author>xavier0</author><pubDate>Sat, 26 Mar 2016 13:01:56 +0800</pubDate><description><![CDATA[折纸算法]]></description><category></category></item><item><title><![CDATA[PKU离散数学]]></title><link>https://blog.youkuaiyun.com/xavier0/article/details/50974615</link><guid>https://blog.youkuaiyun.com/xavier0/article/details/50974615</guid><author>xavier0</author><pubDate>Thu, 24 Mar 2016 20:07:08 +0800</pubDate><description><![CDATA[PKU离散数学第一讲逻辑学：探索、阐述和确立有效推理原则 
三段论⎧⎩⎨大前提小前提结论人都会死苏格拉底是人苏格拉底会死三段论  
 \begin{cases}
大前提 & 人都会死\\
小前提 & 苏格拉底是人\\
结论 & 苏格拉底会死
\end{cases}  
 
命题演算，谓词演算 
命题的“真假属性”是真值 
命题⎧⎩⎨陈述句对象要确定要进行判断  
命题  
\begin{cases}]]></description><category></category></item><item><title><![CDATA[java笔记（coursera-pku）]]></title><link>https://blog.youkuaiyun.com/xavier0/article/details/46575673</link><guid>https://blog.youkuaiyun.com/xavier0/article/details/46575673</guid><author>xavier0</author><pubDate>Sat, 20 Jun 2015 21:27:45 +0800</pubDate><description><![CDATA[java笔记]]></description><category></category></item><item><title><![CDATA[Linux笔记（鸟哥的私房菜）]]></title><link>https://blog.youkuaiyun.com/xavier0/article/details/46574527</link><guid>https://blog.youkuaiyun.com/xavier0/article/details/46574527</guid><author>xavier0</author><pubDate>Sat, 20 Jun 2015 17:16:50 +0800</pubDate><description><![CDATA[Linux笔记]]></description><category></category></item><item><title><![CDATA[MIT algorithm 笔记（视频2）]]></title><link>https://blog.youkuaiyun.com/xavier0/article/details/46573649</link><guid>https://blog.youkuaiyun.com/xavier0/article/details/46573649</guid><author>xavier0</author><pubDate>Sat, 20 Jun 2015 15:00:05 +0800</pubDate><description><![CDATA[MIT algorithm 笔记（视频2）]]></description><category></category></item><item><title><![CDATA[python学习笔记]]></title><link>https://blog.youkuaiyun.com/xavier0/article/details/44701537</link><guid>https://blog.youkuaiyun.com/xavier0/article/details/44701537</guid><author>xavier0</author><pubDate>Sat, 28 Mar 2015 16:57:03 +0800</pubDate><description><![CDATA[split()可以用来切分字符串]]></description><category></category></item></channel></rss>