Solution (source code)

= Solution

The remaining <eigenvalue> is $\boxed{\lambda_3=0}$. At a <steady state>, the three cyclic fluxes agree: $\epsilon A=\eta B=\delta C$. A corresponding nonzero <eigenvector> is therefore
$$
\boxed{v_0=\begin{pmatrix}1/\epsilon\\1/\eta\\1/\delta\end{pmatrix},}
$$
or its scalar multiple $(\delta\eta,\epsilon\delta,\epsilon\eta)^T$. Its positive components express a possible equilibrium concentration ratio.