usepackage{amsmath}
usepackage{amssymb}
usepackage[usenames]{color}
usepackage{cancel}
usepackage{wasysym}
usepackage{upgreek}

newcommand{dup}{mathrm{d}}

% Uncomment this line for sans-serif font
%everymath{mathsf{xdefmysf{mathgroupthemathgrouprelax}}mysf}

% Uncomment these lines for colored equations
% Caution! Background color breaks transparency!
%definecolor{fgcolor}{RGB}{0,0,255}
%definecolor{bgcolor}{RGB}{255,0,0}
%pagecolor{bgcolor}color{fgcolor}

documentclass[12pt]{article}
usepackage[T1]{fontenc}
usepackage{arev}
begin{document}
Huge
[
  alpha
]
end{document}

usepackage[T1]{fontenc}
usepackage[utf8]{inputenc}
usepackage{amsmath}
usepackage{amssymb}
usepackage[usenames]{color}

usepackage{stix}

% Comment out the line above and uncomment the two lines below for sans-serif font
%usepackage{arevmath}
%usepackage{arev}

% Uncomment these lines for colored equations
% definecolor{fgcolor}{RGB}{0,0,255}
% definecolor{bgcolor}{RGB}{255,255,255}
% pagecolor{bgcolor}color{fgcolor}