Equation Icon  B+ = ℛarm (0)∘A+,---- ---1--- γ1arm- E+ = ℓarm(0) τ A+, iϕ A+ = DW e W , CW = B+ei ϕW, ∘ ---- ∘ ---- BW = −∘ --RW AW +∘ --TW CW , D = T A + R C . (332 ) W W W W W