Causal construction of Yang-Mills theories. Pt. 3

The investigation of quantized Yang-Mills theories by means of casual perturbation theory is continued. The authors give a comprehensive discussion of the C-number identities which express gauge invariance of the non-Abelian theory (Cg-identities): Having proven these identities for distributions with two external legs in a previous paper, they derive all identities for 3-legs and 4-legs here as a consequence of gauge invariance