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  1. Reconstructible and Half-Reconstructible Tournaments: Application to Their Groups of Hemimorphisms.Youssef Boudabbous - 1999 - Mathematical Logic Quarterly 45 (3):421-431.
    Let T and T1 be tournaments with n elements, E a basis for T, E′ a basis for T′, and k ≥ 3 an integer. The dual of T is the tournament T” of basis E defined by T = T for all x, y ε E. A hemimorphism from T onto T′ is an isomorphism from T onto T” or onto T. A k-hemimorphism from T onto T′ is a bijection f from E to E′ such that for any (...)
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