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    Note di geometria Combinatiria

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    Argomenti trattati: richiami di algebra e geometria; spazi e piani finiti; polinomi e varietà algebriche su campi finiti; sottopiani, archi e calotte di ordine massimo; blocking set; teoria dei disegni

    Extensions of combinatorial geometries by the addition of a unique line

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    AbstractAll extensions of a combinatorial geometry G are determined which can be obtained adjoining a unique line. The result is achieved investigating Dilworth structures and modular cuts of Dilworth truncation of G
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