% % Packages % %
\usepackage{amsmath, amsfonts, amssymb, amsthm, amscd, mathrsfs}
\usepackage{graphicx}
\usepackage{color}
\usepackage{tikz,tikz-cd}
\usepackage{fancyhdr,tabularx,cite,mathrsfs,caption}
\usetikzlibrary{shapes.geometric}
\usetikzlibrary{decorations.pathreplacing}


% % % % % %
\newcommand{\fln}{\left\lfloor\frac{n}{2}\right\rfloor}
\newcommand{\cln}{\left\lceil\frac{n}{2}\right\rceil}
\newcommand{\lb}{\left[}
\newcommand{\rb}{\right]}