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<dc:title xml:lang="en">Algebraic invariants of matroids and generalized operads</dc:title>
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<dc:subject xml:lang="fr">Matroïdes</dc:subject>
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<dc:subject xml:lang="fr">Koszulité</dc:subject>
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<dcterms:abstract xml:lang="fr">Dans la première partie de cette thèse on introduit une structure opéradique global sur certains invariants algébriques de matroïdes tels que les anneaux de Chow combinatoires généralisés et les algèbres d’Orlik-Solomon. On développe une théorie de bases de Gröbner pour cette nouvelle structure opéradique, que l’on utilise pour montrer la Koszulité de l’opérade des anneaux de Chow combinatoires. Dans la deuxième partie on utilise cette nouvelle structure opéradique pour prouver la Koszulité de certains anneaux de Chow combinatoires généralisés.</dcterms:abstract>
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