  Matter Neutrino Resonances (MNRs) can drastically modify neutrino flavor
evolution in astrophysical environments and may significantly impact
nucleosynthesis. Here we further investigate the underlying physics of MNR type
flavor transitions. We provide generalized resonance conditions and make
analytical predictions for the behavior of the system. We discuss the adiabatic
evolution of these transitions, considering both Symmetric and Standard
scenarios. Symmetric MNR transitions differ from Standard MNR transitions in
that both neutrinos and antineutrinos can completely transform to other flavors
simultaneously. We provide an example of the simplest system in which such
transitions can occur with a neutrino and an antineutrino having a single
energy and emission angle. We further apply linearized stability analysis to
predict the location of self-induced nutation type (or bipolar) oscillations
due to neutrino-neutrino interactions in the regions where MNR is ineffective.
In all cases, we compare our analytical predictions to numerical calculations.
