... and all others are obtained by appendingLorentz or internal symmetry indices. In addition, the description of local supersymme-try (supergravity) is easier.a. Index conventionsOur three-dimensional ... representation acts on a real (Majorana) two-component spinorψα=(ψ+, ψ−). In general we use spinor notation for all Lorentz representations, denot-ing spinor indices by Greek letters α, β, , ... coordinates is invariant under the full algebra. Ifthe superfield expansion in terms of components is substituted into the integral and theθ-integration is carried out, the resulting component integral...