\ProvidesClass{mathhw}
\LoadClass[fontsize=9pt]{scrartcl}

\RequirePackage[utf8]{inputenc}
\RequirePackage{amsfonts, amsmath, amssymb, amsthm}
\RequirePackage{enumitem}
\RequirePackage{geometry}
\RequirePackage{graphicx}
\RequirePackage{physics}
\RequirePackage{bm}
\RequirePackage{pgfplots}
\pgfplotsset{
    compat=newest,
}
\usepgfplotslibrary{fillbetween}
\usetikzlibrary{patterns}


\let\sidesum\sum
\let\sidelim\lim
\renewcommand\sum{\sidesum\limits}
\renewcommand\lim{\sidelim\limits}
\newcommand{\sm}{\sum}
\newcommand{\problem}[1]{\subsection*{#1.}}
\newcommand{\pbl}[1]{\subsection*{#1.}}

\geometry{top=20mm,bottom=20mm}