我想知道为什么字母 k 不在预期的位置,以及为什么到 sigma 的路径位置很奇怪。发生了什么事:)
\documentclass{article}
\usepackage{tikz}
\tikzset{
nat/.style = {fill=white,draw,circle,minimum size=0.5cm,inner sep=1pt},
}
\begin{document}
\tikzset{
nat/.style = {fill=white,draw,circle,minimum size=0.5cm,inner sep=1pt},
}
\begin{tikzpicture}
\draw (1,4) -- (1,3)
node[pos=1,nat] (s) {$\sigma$};
node[pos=0,nat,above] {$k$};
\draw (2,0) node[below] {$l$} to[out=90, in=-90] (s);
\draw (3,0) -- (3,4)
node[pos=0,below] {$x$}
node[pos=0.8,nat] (a) {$a$}
node[pos=1,above] {$x$};
\draw (1,0) node[below] {$m$} to[bend left] (a);
\end{tikzpicture}
\end{document}