feat: adds 7.13

tex/7.13.tex

@@ -0,0 +1,54 @@
+\documentclass{article}
+
+% set up telugu
+\usepackage{fontspec}
+\newfontfamily\telugufont{Potti Sreeramulu}[Script = Telugu]
+\usepackage{polyglossia}
+\setdefaultlanguage{english}
+\setotherlanguage{telugu}
+
+%other packages
+\usepackage{amsmath}
+\usepackage{amssymb}
+\usepackage{physics}
+\usepackage[binary-units=true]{siunitx}
+\usepackage{todonotes}
+\usepackage{luacode}
+\usepackage{titling}
+\usepackage{enumerate}
+
+% custom deepak packages
+\usepackage{luatrivially}
+\usepackage{subtitling}
+
+\usepackage{cleveref}
+
+\begin{luacode*}
+	math.randomseed(31415926)
+\end{luacode*}
+
+\newcommand{\kb}{k_{\mathrm{B}}}
+
+\title{Problem 7.13}
+\subtitle{Bose condensation in a band}
+\author{\begin{telugu}హృదయ్ దీపక్ మల్లుభొట్ల\end{telugu}}
+% want empty date
+\predate{}
+\date{}
+\postdate{}
+
+% !TeX spellcheck = en_GB
+\begin{document}
+	\maketitle
+
+	The density of single-particle eigenstates $g(E)$ of a system of noninteracting bosons forms a band;
+	the eigenenergies are confined to a range $E_\mathrm{min} < E < E_\mathrm{max}$.
+	
+	\section{Solution} \label{sec:solution}
+	
+	\subsection*{(a)}
+
+	\newpage
+	\listoftodos
+
+\end{document}