数学基础

$L^p$ 范数: ${\left| {\bf{x}} \right|_p} = {\left(\sum\limits_i {\left| {x_i} \right|}^p \right)^{\frac{1}{p}}}$

内积: $\left\langle \bf{x,y} \right\rangle = \sum\limits_i {x_i\cdot y_i} $