2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/108936For a closed real algebraic plane affine curve dividing its complexification and equipped with a complex orientation, the Whitney number is expressed in terms of behavior of its complexification at infinity.8 pages 1 figure, to be published in Moscow Mathematical JournalAlgebraic GeometryGeometric Topology14P25; 53A03; 57R42text