*.$$\documentclass[00pt]{minimal}                 \usepackage{amsmath}                 \usepackage{wasysym}                  \usepackage{amsfonts}                  \usepackage{amssymb}                  \usepackage{amsbsy}                 \usepackage{mathrsfs}                 \usepackage{upgreek}                 \setlength{\oddsidemargin}{-00pt}                 \begin{document}$$\begin{aligned} \begin{aligned} \frac{p_I\left( s\right) }{p_{I'}\left( s\right) }&=\prod _{i=0}^{k}\left( \frac{\exp {\left( -\frac{\varepsilon \ \left| {q\left( I\right) }_i-s_i\right| }{{\nabla q}