	\begin{tikzpicture}
		\draw(1,1) node{\begin{tikzpicture}[scale=1]\small
			\def\x{.75};
			%%
			\draw[dashed,\gray](0*\x,0*\x) -- (1*\x,0*\x);
			\draw[dashed,\gray](0*\x,1*\x) -- (3*\x,1*\x);
			\draw[dashed,\gray](0*\x,2*\x) -- (3*\x,2*\x);
			\draw[dashed,\gray](0*\x,3*\x) -- (5*\x,3*\x);
			\draw[dashed,\gray](0*\x,4*\x) -- (5*\x,4*\x);
			\draw[dashed,\gray](0*\x,0*\x) -- (0*\x,4*\x);
			\draw[dashed,\gray](1*\x,0*\x) -- (1*\x,4*\x);
			\draw[dashed,\gray](2*\x,1*\x) -- (2*\x,4*\x);
			\draw[dashed,\gray](3*\x,1*\x) -- (3*\x,4*\x);
			\draw[dashed,\gray](4*\x,3*\x) -- (4*\x,4*\x);
			\draw[dashed,\gray](5*\x,3*\x) -- (5*\x,4*\x);
			%%
			\draw[line width=1.5pt,black](0*\x,0*\x) -- (0*\x,2*\x) -- (1*\x,2*\x);
			\draw[line width=1.5pt,black](4*\x,4*\x) -- (5*\x,4*\x);
			%%
			\draw(2*\x,2*\x) node[fill=\blue,circle,scale=1](v){};
			\draw(4*\x,4*\x) node[fill=\red,circle,scale=1](w){};
			\draw[line width=1pt,\blue,decorate,decoration={coil,amplitude=1.25,segment length=5}](1*\x,2*\x) -- (2*\x,2*\x);
			\draw[line width=1.5pt,\red](v) -- (2*\x,3*\x) -- (3*\x,3*\x) -- (3*\x,4*\x) -- (w);
		\end{tikzpicture}};
		\draw(3.5,1) node{$\lessdot_{\nu}$};
		\draw(6,1) node{\begin{tikzpicture}[scale=1]\small
			\def\x{.75};
			%%
			\draw[dashed,\gray](0*\x,0*\x) -- (1*\x,0*\x);
			\draw[dashed,\gray](0*\x,1*\x) -- (3*\x,1*\x);
			\draw[dashed,\gray](0*\x,2*\x) -- (3*\x,2*\x);
			\draw[dashed,\gray](0*\x,3*\x) -- (5*\x,3*\x);
			\draw[dashed,\gray](0*\x,4*\x) -- (5*\x,4*\x);
			\draw[dashed,\gray](0*\x,0*\x) -- (0*\x,4*\x);
			\draw[dashed,\gray](1*\x,0*\x) -- (1*\x,4*\x);
			\draw[dashed,\gray](2*\x,1*\x) -- (2*\x,4*\x);
			\draw[dashed,\gray](3*\x,1*\x) -- (3*\x,4*\x);
			\draw[dashed,\gray](4*\x,3*\x) -- (4*\x,4*\x);
			\draw[dashed,\gray](5*\x,3*\x) -- (5*\x,4*\x);
			%%
			\draw[line width=1.5pt,black](0*\x,0*\x) -- (0*\x,2*\x) -- (1*\x,2*\x);
			\draw[line width=1.5pt,black](4*\x,4*\x) -- (5*\x,4*\x);
			%%
			\draw[line width=1pt,\blue,decorate,decoration={coil,amplitude=1.25,segment length=5}](3*\x,4*\x) -- (4*\x,4*\x);
			\draw[line width=1.5pt,\red](1*\x,2*\x) -- (1*\x,3*\x) -- (2*\x,3*\x) -- (2*\x,3.98*\x) -- (3*\x,3.98*\x);
			%%
			\draw(2*\x,2*\x) node[draw=\blue,circle,scale=1](v){};
			\draw(4*\x,4*\x) node[draw=\red,circle,scale=1](w){};
		\end{tikzpicture}};
	\end{tikzpicture}