pointguard0

 4 Meaning of the following notation of Expected value. 3 Simple way of denoting a condition on a long equation 3 Is there a solution to the diophantine equation $a^3 + b^3 = c^2$ other than $1^3 + 2^3 = 3^2$ or scalings thereof? 3 Arithmetic series problem 2 If a function $f: A \to \mathbb R$ is bounded and continuous on $A$, does its integral on said interval converge uniformly?

### Reputation (1,578)

 +2 State for the set $S = \left\{ \frac{1}{1 + e^{-x}} \mid x \in \ \mathbb{R} \right\}$ if it has a max or min. +2 Conditions for a Connection to be a Metric(or Chern) Connection +10 Product of sub Gaussian RVs +2 Suppose that $X \sim U(0,1)$ and $Y$ conditional on $X$ as $\log(\frac{Y}{X}) \sim N(\mu, \sigma^2)$. What is the distribution on $Y$?

### Questions (4)

 3 Assess the Lie-bracket of random matrices. 1 Counterexample to $\| X - Y \| \le \left\| \begin{pmatrix} X & 0 \\ 0 & Y \end{pmatrix} \right\|$? 0 Minimax bounds on estimation of Gaussian mean -1 Characteristic function of an infinitely divisible distribution [closed]

### Tags (77)

 23 probability × 27 6 random-variables × 4 13 probability-theory × 11 5 normal-distribution × 7 7 linear-algebra × 14 4 ordinary-differential-equations × 2 7 probability-distributions × 6 4 sequences-and-series × 2 7 notation × 2 3 inequality × 5

### Accounts (10)

 Mathematics 1,578 rep 31122 Stack Overflow 113 rep 5 Cross Validated 101 rep 3 MathOverflow 101 rep 1 TeX - LaTeX 101 rep 2