Resumen de Caracterisation des relations binaires finies d-demi-reconstructibles
Given a binary relation R of basis E, we define its dual R? by R? (x, y) = R(y, x). A relation R is self-dual if it is isomorphic to R? . A binary relation R0 is hemimorphic to R, if it is isomorphic to R or to R? . A binary relation R is d-half-reconstructible if it is determined by its restrictions of cardinality d, up to hemimorphism. In this paper we characterize the finite binary relations d-half-reconstructibile for every d ∈ {7, 8, 9, 10, 11}.
