2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/78660The aim of this article is to obtain restrictions on complex orientations of dividing real J-curves of almost-complex manifolds. This problem comes from real algebraic geometry and the main result is a congruence generalising Arnol'd, Rokhlin, Mishachev, Zvonilov and Mikhalkin 's previous results. This congruence is obtained with a canonical map defined on homology groups of dimension half the dimension of the manifold with coefficients in $Z/lZ$, with values in $Z/2lZ$.16 pages, 5 figuresAlgebraic Geometry14P25; 14Q05text