箭头 tikz 样式

Question

我想画一些东西：

\begin{center}
  \begin{tikzpicture}[
      >=stealth,
      bullet/.style={
        fill=black,
        circle,
        inner sep=1pt
      },
      projection/.style={
        ->,
        thick,
        shorten <=2pt,
        shorten >=2pt
      },
    ]

    \draw (0, 0) circle [x radius=1, y radius=1.7];
    \node [bullet, label=left:\(   a  \)] (a) at (0,1.2) {};
    \node [bullet, label=left:\(   b  \)] (b) at (0,0.4) {};
    \node [bullet, label=left:\(   c  \)] (c) at (0,-0.4) {};
    \node [bullet, label=left:\(   d  \)] (d) at (0,-1.2) {};
    \node[font=\large] (E) at (0, 2) {\(E\)};

    \begin{scope}[xshift=3.5cm]
      \draw (0, 0) circle [x radius=1, y radius=1.7]; 
      \node [bullet, label=right:\(    \tilde{a}     \)] (w) at (0,1.2) {};
      \node [bullet, label=right:\(    \tilde{b}     \)] (x) at (0,0.4) {};
      \node [bullet, label=right:\(    \tilde{c}     \)] (h) at (0,-0.4) {};
      \node [bullet, label=right:\(    \tilde{d}     \)] (v) at (0,-1.2) {};
      \node[font=\large] (F) at (0, 2) {\(F\)};
    \end{scope}

    \draw [projection] (a) -- (x);
    \draw [projection] (b) -- (h);
    \draw [projection] (c) -- (v);
    \draw [projection] (d) -- (x);
  \end{tikzpicture}
\end{center}

我已经为自己成功做到这一点感到非常自豪，但现在我想画出更小的箭头（因为它看起来不好看）。

你知不知道怎么 ？

我很纠结。我尝试更改一些参数，但它要么告诉我它不知道我在做什么，要么告诉我它什么都没做。我肯定做错了什么。

Answer 1

使用 arrows.meta 库可以非常简单地实现这一点。

\documentclass[tikz,border=3.14mm]{standalone}
\usetikzlibrary{arrows.meta}
\begin{document}
  \begin{tikzpicture}[
      >={Stealth[scale=0.5]},
      bullet/.style={
        fill=black,
        circle,
        inner sep=1pt
      },
      projection/.style={
        ->,
        thick,
        shorten <=2pt,
        shorten >=2pt
      },
    ]

    \draw (0, 0) circle [x radius=1, y radius=1.7];
    \node [bullet, label=left:\(   a  \)] (a) at (0,1.2) {};
    \node [bullet, label=left:\(   b  \)] (b) at (0,0.4) {};
    \node [bullet, label=left:\(   c  \)] (c) at (0,-0.4) {};
    \node [bullet, label=left:\(   d  \)] (d) at (0,-1.2) {};
    \node[font=\large] (E) at (0, 2) {\(E\)};

    \begin{scope}[xshift=3.5cm]
      \draw (0, 0) circle [x radius=1, y radius=1.7]; 
      \node [bullet, label=right:\(    \tilde{a}     \)] (w) at (0,1.2) {};
      \node [bullet, label=right:\(    \tilde{b}     \)] (x) at (0,0.4) {};
      \node [bullet, label=right:\(    \tilde{c}     \)] (h) at (0,-0.4) {};
      \node [bullet, label=right:\(    \tilde{d}     \)] (v) at (0,-1.2) {};
      \node[font=\large] (F) at (0, 2) {\(F\)};
    \end{scope}

    \draw [projection] (a) -- (x);
    \draw [projection] (b) -- (h);
    \draw [projection] (c) -- (v);
    \draw [projection] (d) -- (x);
  \end{tikzpicture}
\end{document}