The electromagnetic field is represented as a bi-paravector F : F = E + i B , with the Hermitian part representing the electric field E and the anti-Hermitian part representing the magnetic field B. In the standard Pauli matrix representation, the electromagnetic field is: F → → ( E 3 E 1 − − i E 2 E 1 + i E 2 − − E 3 ) + i ( B 3 B 1 − − i B 2 B 1 + i B 2 − − B 3 ) .