In dimension three, we show
the existence of weak solutions (u,H,E) to the Landau–Lifshitz equation coupled
with the time-dependent Maxwell equation such that u is Hölder continuous away
from a closed set Σ that has locally finite 3-dimensional parabolic Hausdorff measure.
For two reduced Maxwell equations, Hölder continuity of ∇u away from Σ is also
established.