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nhigham.com | ||
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www.ethanepperly.com
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djalil.chafai.net
Let $X$ be an $n\times n$ complex matrix. The eigenvalues $\lambda_1(X), \ldots, \lambda_n(X)$ of $X$ are the roots in $\mathbb{C}$ of its characteristic polynomial. We label them in such a way that $\displaystyle |\lambda_1(X)|\geq\cdots\geq|\lambda_n(X)|$ with growing phases. The spectral radius of $X$ is $\rho(X):=|\lambda_1(X)|$. The singular values $\displaystyle s_1(X)\geq\cdots\geq s_n(X)$ of $X$ are the eigenvalues of the positive semi-definite Hermitian... |
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eklausmeier.goip.de
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www.casualoptimist.com
CartoonistVera Brosgol has posted her startling, wordless mini-comic What Were You Raised by Wolves? online. Read it in its entirety here. (via Robot 6) |
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