common_preamble.tex

% Copyright 2023 Kieran W Harvie. All rights reserved.
\usepackage{amsmath}
\usepackage{titlesec}
\usepackage{hyperref}
\usepackage{amssymb}
\usepackage{tikz}
\usetikzlibrary{angles}

\usepackage[OT2,T1]{fontenc}

\titleformat{\chapter}[display]
	{\normalfont\huge\bfseries}{}{0pt}{\Huge}
\titlespacing*{\chapter}
	{0pt}{10pt}{40pt}

\DeclareSymbolFont{cyrletters}{OT2}{wncyr}{m}{n}

\DeclareMathOperator{\sinc}{sinc}
\DeclareMathOperator{\Ai}{Ai}
\DeclareMathSymbol{\Sha}{\mathalpha}{cyrletters}{"58}
\DeclareMathOperator{\Hom}{Hom}
\DeclareMathOperator{\cl}{cl}
\DeclareMathOperator{\im}{Im}
\DeclareMathOperator{\re}{Re}
\DeclareMathOperator{\rect}{rect}
\DeclareMathOperator{\sgn}{sgn}
\DeclareMathOperator{\XOR}{ XOR }
\DeclareMathOperator{\E}{\mathbb{E}}
\DeclareMathOperator{\img}{img}
\DeclareMathOperator{\ord}{ord}
\DeclareMathOperator{\Res}{Res}
\DeclareMathOperator{\spn}{span}
\DeclareMathOperator{\lcm}{lcm}
\DeclareMathOperator{\tr}{tr}
\DeclareMathOperator{\adj}{adj}
\DeclareMathOperator{\Inn}{Inn}
\DeclareMathOperator{\Out}{Out}
\DeclareMathOperator{\Aut}{Aut}

\newcommand{\bra}[1]{\left\langle#1\right|}
\newcommand{\ket}[1]{\left|#1\right\rangle}
\newcommand{\braket}[2]{\left\langle#1\middle|#2\right\rangle}