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Jan
15
asked Different versions of Mercer's theorem
Jan
6
answered $E(X\mid X+Y)$, where $X$ and $Y$ are independent $U(0,1)$.
Apr
7
asked How to solve the least square with $L_2$ norm constraint directly?
Apr
6
answered Why are additional constraint and penalty term equivalent in ridge regression?
Nov
15
answered When will $AB=BA$?
Apr
19
asked Givens rotation and retraction mapping
Mar
24
asked Generic points as coefficients of polynomial kernels?
Jan
23
asked Correspondence between an order of rational function field and a Dedekind cut
Jan
15
answered Mnemonic for cross product
Jun
17
answered Suppose that a $3\times 3$ matrix $M$ has an eigenspace of dimension $3$. Prove that $M$ is a diagonal matrix.
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 defined by $x_1 = \sin x_0$ and $x_{n+1} = \sin x_n$
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?