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 8h asked Proving that $|P\{X=m\}-P\{Y=m\}| \leq P\{X\neq Y\}$ Apr 6 answered Finding the maximum of $f(x,y,z)=x^ay^bz^c$ where $x,y,z\in [0,\infty)$ and $x^k+y^k+z^k=1$ Apr 6 asked Is $\mathbb{R}\times\{0,1\}$ a manifold? Apr 2 asked Finding the maximum of $f(x,y,z)=x^ay^bz^c$ where $x,y,z\in [0,\infty)$ and $x^k+y^k+z^k=1$ Mar 24 asked Finding the inverse of $f(x,y)=(e^{x}\cos(y),e^{x}\sin(y))$ around a neighborhood. Mar 16 asked Directional derivative of determinant at the identity is the trace of the matrix? Jan 2 asked Using Lagrange's diagonalization on degenerate linear forms Dec 28 asked Any transformation that commutes with a transformation commuting with $S$ must be a polynomial in $S$ Dec 24 asked Linear transformations preserve the squared sum of norms of orthonormal bases Dec 21 asked All the ternary n-words with an even sum of digits and a zero. Dec 19 asked All the binary n-words without the sequence 011 Dec 5 asked Relation of Smith normal form to basis of subgroup Dec 5 asked Finding the function of the power series $\sum\limits _{n=1}^{\infty}\frac{x^{2n+1}}{n}$ Nov 28 asked Proving differentiability on every interval equals proving differentiability on all of $\mathbb{R}$? Nov 24 answered If $\lim\limits _{x\to\infty}\left(\log f\right)'\left(x\right)$ is negative, then $\int_{0}^{\infty}f\left(x\right)dx$ converges? Nov 24 asked If $\lim\limits _{x\to\infty}\left(\log f\right)'\left(x\right)$ is negative, then $\int_{0}^{\infty}f\left(x\right)dx$ converges? Nov 19 asked Powers of linear transformation and minimal polynomial Nov 10 asked Union of conjugates of a subgroup of a finitely generated group. Nov 6 asked If \$H