Tikzpicture 节点中的数学方程

Question

此代码编译了菱形格子的哈斯图。现在，我想用 \wedge b 替换 0 节点。但是，当我用 \wedge b 替换所有 0 实例时，出现错误。有人能帮助解决这个问题吗？

\开始{tikzpicture}

  \node [mynode,label=above:1] (1) at (0,0) {};
  \node [mynode,below left  = of 1,label=left:a] (a)  {};
  \node [mynode,below right = of 1,label=right:b] (b) {};
  \node [mynode,below right = of a,label=below:0] (0) {};
  \node [mynode,below       = of 1,label=right:c] (c) {};

  \draw (1) -- (a) 
        (1) -- (c) 
        (1) -- (b)
        (c) -- (0)
        (a) -- (0) 
        (b) -- (0);

\end{tikzpicture}