2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54703By using the path integral method , we calculate the Green functions of field strength of Yang-Mills theories on arbitrary nonorientable surfaces in Schwinger-Fock gauge. We show that the non-gauge invariant correlators consist of a free part and an almost $x$-independent part. We also show that the gauge invariant $n$-point functions are those corresponding to the free part , as in the case of orientable surfaces.6 pages,LaTexHigh Energy Physics - Theorytext