  The infinite AC ladder network can exhibit unexpected behavior. Entangling
the topology brings even more surprises, found by direct numerical
investigation. We consider a simple modification of the ladder topology and
explain the numerical result for the complex impedance, using linear algebra.
The infinity limit of the network's size corresponds to keeping only the
eigenvectors of the transmission matrix with the largest eigenvalues, which can
be viewed as the most dominant modes of electrical information that propagate
through the network.
