Mirror Symmetry in Integral Formulations for Eddy Currents

This contribution addresses the exploitation of mirror symmetry (formally, the abelian D
₁
and D
₂
dihedral symmetry groups) in various integral formulations for eddy current problems. The novelty of the contribution is in particular how to rigorously treat non-simply-connected conductors when computing the first cohomology group generators on the symmetry cell of the problem only.