（不）暗示 tikz 图中的边缘符号

Question

我想在 tikz 中制作一个图表，如下所示

但是我想用implies符号代替箭头。如何才能制作出如上图所示的图形，但以隐含符号（以及not implies符号）作为边？

Answer 1

你可以使用double（implies注：功劳归于@percusse用于not implie命令（即degil）。

\documentclass{standalone}
\usepackage{tikz}
\usetikzlibrary{graphs,decorations.pathmorphing,decorations.markings} 
\usetikzlibrary{arrows}

\tikzset{degil/.style={
            decoration={markings,
            mark= at position 0.5 with {
                  \node[transform shape] (tempnode) {$\backslash$};
                  }
              },
              postaction={decorate}
}
}


\begin{document}
\begin{tikzpicture}[>=stealth,>=implies]
 \graph  {
  a ->[double] {b,c} ->[double,degil] d
};
\end{tikzpicture}
\end{document}

Answer 2

或许这...

\documentclass[tikz,border=5]{standalone}
\usetikzlibrary{graphs,graphs.standard,arrows}
\tikzgraphsset{
  implies/.style={edges={double, double equal sign distance, -implies}},
  not implies/.style={implies,
    edge node={ node [sloped, xscale=-1] {$\backslash$} }
  },
  !/.style={not implies}
}
\begin{document}
\tikz\graph [implies] {
  a -> {b, c} ->[!] d;
};
\end{document}