4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document} $$\begin{array}{@{}rcl@{}} D^{\prime\prime} [a,b] &=& \max_{u,v \in \mathcal{L} - \{a,b\}} \max\left(0,\frac{D^{\prime}_{uv}[a,b]-\beta}{\alpha}\right). \end{array} $$ \end{document}D′′[a,b]=maxu,v∈ℒ−{a,b}max0,Duv′[a,b]−βα.