  In this paper, a spectral theorem for matrices with (complex) zeon entries is
established. In particular, it is shown that when $A$ is an $m\times m$
self-adjoint matrix whose characteristic polynomial $\chi_A(u)$ "splits" over
the zeon algebra ${\mathbb{C}\mathfrak{Z}}_n$, there exist $m$ spectrally
simple eigenvalues $\lambda_1, \ldots, \lambda_m$ and $m$ linearly independent
normalized zeon eigenvectors $v_1, \ldots, v_m$ such that $A=\bigoplus_{j=1}^m
\lambda_j\pi_j$, where $\pi_j=v_j{v_j}^\dag$ is a rank-one projection onto the
zeon submodule ${\rm span}\{v_j\}$ for $j=1, \ldots, m$.
