Proof that a median minimizes 1-norm.
7740
The median minimizes the sum of absolute deviations (the $ {\ell}_{1} $ norm)
149536
Why is the  $L_p$ norm strictly convex for $1<p<\infty?$
77412
Product of $\min$ and $\max$ of $n$ i.i.d. random variables.
67702
Minimal dense subset
150727
Characterization convex function.
144656
Linear functional and a bounded norm
42266
Show that $d(x,y)=\min \{1,|x-y|\}$ is a metric on $\mathbb R$
148954
Understanding a statement about equivalent norms ($||\cdot ||_2 \sim||\cdot||_1 $)
37924
Equivalence of norms proof
111075
Deriving of formula for finding the length of median
58813
Computing $\max_{1/2 \leq x \leq 2} ( \min_{1/3 \leq y \leq 1} f(x,y) )$ where $f(x,y) = x(y \log y - y) - y \log x$.
123190
Joint distribution of $\min(X_1,\ldots,X_n)$ and $\max(X_1,\ldots,X_n)$.
66742
Proving the AM-GM Inequality with Lagrange Multipliers
144382
Proving $\lVert x \rVert_3$ is smaller than euclidean norm
109310
Understanding “the mean minimizes the mean squared error”
158704
How to minimize $\sum_{i=1}^p (y_i-x_i)^2$ with constraints $\sum_{i=1}^p y_i - 1 =0$ and $\forall i=\overline{1,p}:-y_i \le 0$?
152642
Expectation of Minimum of $n$ i.i.d. uniform random variables.