2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/53185We propose the another, in principe nonperturbative, method of the evaluation of the Wiener functional integral for $ϕ^4$ term in the action. All infinite summations in the results are proven to be convergent. We finf the "generalized" Gelfand -- Yaglom differential equation implying the functional integral in the continuum limit.Presented at "Path integrals. From quantum information to cosmology", 8th International conference, Prague, June 6--10, 2005High Energy Physics - Theorytext