  In a model proposed in 2012, all flavor mixing has a single source and is
governed by a single "master matrix." This model was shown to give several
predictions for quark and lepton masses and mixing angles and for mixing angles
within SU(5) multiplets that are observable in proton decay. Here it is shown
that the same master matrix controls the flavor-changing processes mediated by
a singlet scalar that exists in the model, giving predictions for tau to mu +
gamma, tau to e + gamma, and mu to e + gamma.
