... σf)i,j,k,L≈σi +1, j,k,Lf 11 − σi 1, j,k,Lf 11 2x 1 +σi,j +1, k,Lf 12 − σi,j 1, k,Lf 12 2x2+σi,j,k +1, Lf 13 − σi,j,k 1, Lf 13 2x3e 1 +σi +1, j,k,Lf 21 − σi 1, j,k,Lf 21 2x 1 +σi,j +1, k,Lf ... vf)i,j,k,L +1, K 1 +tρf∇x· σf+ρfbfi,j,k,L +1, K 1 .(8 .18 )In an abstract setting, we haveAf 1 ρL +1, Kf,θL +1, K 1 f, vL +1, K 1 f= Ff 1 ρL +1, K 1 f,θL +1, K 1 f, vL +1, K 1 f, ... 2ρL +1, Kf,θL +1, Kf, vL +1, K 1 f= Ff 2ρL +1, Kf,θL +1, K 1 f, vL +1, K 1 f, (ENERGY),Af 3ρL +1, Kf,θL +1, Kf, vL +1, Kf= Ff 3ρL +1, Kf,θL +1, Kf, vL +1, K 1 f,...