2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51049In the present paper we demonstrate the possibility of the [SUSY(5)]^3 SUSY unification at the energy scale $μ_{GUT}\approx 10^{18.3} GeV$ with the value of GUT inverse finestructure constant $α_{GUT}^{-1}\approx 34.4$, which is very close to its critical value $α_{5, crit}^{-1}\approx 34.0$, existing at the Planck scale.15 pages, 5 figures; submitted to Festschrift dedicated to the 60th jubilee of Holger Bech NielsenHigh Energy Physics - Theory[SU(5)]^3 SUSY unificationtext