ziyuang

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34 Posts

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Apr
17
 asked About the spectral radius of a kind of matrices
Apr
17
 asked Prove or disprove: the spectral radius of a matrix with negative entries and row sums as 1 is larger than 1
Apr
16
 asked Textbooks on modern optimization (on machine learning) with exercises
Feb
1
 asked The positive-definite-ness of RBF kernel
Oct
21
 asked Questions about algebraic manifold on matrices
Sep
26
 answered Solve $3\sqrt{x+4}-2\sqrt{x-11}+5\sqrt{x-8}=0$
Jun
12
 asked Compound Poisson process with exponential distribution
Apr
23
 answered Need help solving Recursive series
Apr
14
 asked Similarity between $I+N$ and $e^N$ when $N$ is nilpotent
Oct
17
 asked How many $n$'s can make $4m^2-n^2$ a perfect square? And, triple of a perfect square?
Sep
25
 asked Solution to a system of linear equations in GF(2)
Jul
13
 answered How am I supposed to substitute these integral bounds?
Jun
26
 asked Moser interation for nonlinear elliptic equation
Jun
25
 answered Getting the inverse of a lower/upper triangular matrix
Jun
25
 asked How to prove Campanato space is a Banach space
Jun
23
 asked Question in solving $\phi(t)=\phi(2t)+\phi(2t-1)$, $\phi\ne0$
Jun
22
 answered How to calculate dual frames under constraints?
Jun
22
 asked How to calculate dual frames under constraints?
Jun
22
 asked How to use Galerkin method to prove uniqueness of solutions of hyperbolic equations?
Jun
15
 answered What is a very simple example of a matrix acting on a vector space?
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