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seen Dec 18 at 14:50

math


Dec
17
accepted $\left\Vert J(x)^{-1}\right\Vert<2\left\Vert J(x^*)^{-1}\right\Vert. $?
Dec
16
revised $\left\Vert J(x)^{-1}\right\Vert<2\left\Vert J(x^*)^{-1}\right\Vert. $?
added 145 characters in body
Dec
16
asked $\left\Vert J(x)^{-1}\right\Vert<2\left\Vert J(x^*)^{-1}\right\Vert. $?
Dec
15
awarded  Caucus
Dec
15
comment Rayleigh quotient ($|r(q)-\lambda|=O(||q-x||^2)$ ?)
I read that $|r(q)-\lambda|=O(||q-x||^2)$ is only for symmetric matrices. and the other inequality is for any matrix A
Dec
15
comment Rayleigh quotient ($|r(q)-\lambda|=O(||q-x||^2)$ ?)
thanks. edited it
Dec
15
revised Rayleigh quotient ($|r(q)-\lambda|=O(||q-x||^2)$ ?)
added 10 characters in body
Dec
14
accepted Exponentiation of a $2\times 2$ matrix
Dec
14
accepted about Laplace transfrom, how to show:$H(s)=G(s)/s$
Dec
14
revised Rayleigh quotient ($|r(q)-\lambda|=O(||q-x||^2)$ ?)
added 15 characters in body
Dec
14
asked Rayleigh quotient ($|r(q)-\lambda|=O(||q-x||^2)$ ?)
Dec
6
revised Exponentiation of a $2\times 2$ matrix
deleted 40 characters in body
Dec
4
revised How to solve $y'=\sqrt{1-y^2} , y(0)=0$ by using power series
edited title
Dec
4
revised about Laplace transfrom, how to show:$H(s)=G(s)/s$
added 277 characters in body
Dec
4
asked about Laplace transfrom, how to show:$H(s)=G(s)/s$
Dec
4
revised How to solve $y'=\sqrt{1-y^2} , y(0)=0$ by using power series
added 33 characters in body; edited title
Dec
4
comment How to solve $y'=\sqrt{1-y^2} , y(0)=0$ by using power series
yea corrected it
Dec
4
asked How to solve $y'=\sqrt{1-y^2} , y(0)=0$ by using power series
Dec
3
asked Exponentiation of a $2\times 2$ matrix
Dec
2
asked $\sigma_{min}(A+B)\ge \sigma_{min}(A)+\sigma_{min}(B)$ ? (for singular values)