Let $A$ and $B$ be two matrices (not necessarily of the same size). Relative to the lexicographically ordered basis on the space of tensors, the matri...
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其他好文 时间:
2014-11-19 18:20:50
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142
(1). There is a natural isomorphism between the spaces $\scrH\otimes \scrH^*$ and $\scrL(\scrH,\scrK)$ in which the elementary tensor $k\otimes h^*$co...
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其他好文 时间:
2014-11-19 18:05:06
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326
Suppose it is known that $\scrM$ is an invariant subspace for $A$. What invariant subspaces for $A\otimes A$ can be obtained from this information alo...
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其他好文 时间:
2014-11-19 17:55:24
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191
1概率论与数理统计词汇英汉对照表Aabsolutevalue绝对值accept接受acceptableregion接受域additivity可加性adjusted调整的alternativehypothesis对立假设analysis分析analysisofcovariance协方差分析analysisofvariance方差分析arithmeticmean算术平均值association相关性assump..
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其他好文 时间:
2014-11-19 16:22:19
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256
http://blog.csdn.net/meegomeego/article/details/36180343http://www.opsers.org/linux-home/server/php-fpm-on-analysis-of-system-resources.html首先,CGI是干嘛的...
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Web程序 时间:
2014-11-19 13:51:36
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197
假如你有一个购物类的网站,那么你如何给你的客户来推荐产品呢?这个功能在很多电商类网站都有,那么,通过SQL Server Analysis Services的数据挖掘功能,你也可以轻松的来构建类似的功能。将分为三个部分来演示如何实现这个功能。构建挖掘模型为挖掘模型编写服务接口开发简单的前端应用此篇介...
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数据库 时间:
2014-11-19 12:06:19
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231
If $A$ is a contraction, show that $$\bex A^*(I-AA^*)^{1/2}=(I-A^*A)^{1/2}A^*. \eex$$ Use this to show that if $A$ is a contraction on $\scrH$, then t...
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其他好文 时间:
2014-11-19 00:10:53
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315
Let $A=A_1\oplus A_2$. Show that
(1). $W(A)$ is the convex hull of $W(A_1)$ and $W(A_2)$; i.e., the smallest convex set containing $W(A_1)\cup...
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其他好文 时间:
2014-11-19 00:04:31
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272
For every matrix $A$, the matrix $$\bex \sex{\ba{cc} I&A\\ 0&I \ea} \eex$$ is invertible and its inverse is $$\bex \sex{\ba{cc} I&-A\\ 0&I \ea}. \eex$...
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其他好文 时间:
2014-11-18 23:49:24
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217
(1). When $A$ is normal, the set $W(A)$ is the convex hull of the eigenvalues of $A$. For nonnormal matrices, $W(A)$ may be bigger than the convex hul...
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其他好文 时间:
2014-11-18 23:41:26
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243