2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/60992This paper is the supplement to the section 2 of the paper "Floating bundles and their applications" (math.AT/0102054). Below we construct the denumerable set of extensions of the formal group of geometric cobordisms $F(x\otimes 1,1\otimes x)$ by the Hopf algebra $H=Ω_U^*(Gr).$4 pages, xypicAlgebraic Topologytext