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\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{mathtools}
\title{Bridgeland Stabilities and Finding Walls}
\subtitle{}
\author{Luke Naylor}
\date{March 2023}
\newcommand\RR{\mathbb{R}}
\newcommand\CC{\mathbb{C}}
\newcommand\centralcharge{\mathcal{Z}}
\newcommand\coh{\operatorname{Coh}}
\newcommand\rank{\operatorname{rk}}
\newcommand\degree{\operatorname{deg}}
\newcommand\realpart{\mathfrak{Re}}
\newcommand\imagpart{\mathfrak{Im}}
\begin{sagesilent}
from sagetexscripts import *
\end{sagesilent}
\section{Transitioning to Stab on Triangulated Categories}
\begin{frame}{Central Charge for Mumford Stability}
\begin{align*}
&\centralcharge \colon \coh(X) \to \CC \\
&\centralcharge (E) = - \degree(E) + i \rank(E)
\begin{columns}[T] % align columns
\begin{column}{.48\linewidth}
\[
\centralcharge (E) = r(E) e^{i\pi \varphi(E)}
\]
\begin{center}
\begin{large}
$\varphi$ called "phase"
\end{large}
\end{center}
\end{column}%
%\hfill%
\begin{column}{.48\linewidth}
\[
\mu(E) =
\frac{
- \realpart(\centralcharge(E))
}{
\imagpart(\centralcharge(E))
}
\quad
\]
\begin{center}
\begin{large}
(allow for $+\infty$)
\end{large}
\end{center}
\resizebox{0.5\hsize}{!}{
\sageplot{fig2.plot()}
}
\end{frame}
\begin{frame}
\resizebox{0.5\hsize}{!}{
\sageplot{fig3.plot()}
}
\end{frame}
\begin{frame}
\resizebox{0.5\hsize}{!}{
\sageplot{fig4.plot()}
}
\section{Section 1}
\section{Section 2}
\subsection{Subsection 2.1}
\end{document}