texlive 2020下cases宏包与mathtools宏包似乎存在着冲突

2020-04-13 00:15发布

```tex \documentclass[a4paper,UTF8,twoside]{article} \usepackage{amsmath} \usepackage{amssymb} %\use...

```tex \documentclass[a4paper,UTF8,twoside]{article} \usepackage{amsmath} \usepackage{amssymb} %\usepackage{mathtools} \usepackage[margin=20mm]{geometry} \usepackage{cases} \begin{document} \begin{numcases}{} \text{in } L^p, &$1