Une structure S de type fini est dite QFA (pour quasi finiment axiomatisable, voir [A. Nies, Separating classes of groups by first order sentences, Internat. J. Algebra Comput. 13 (2003) 287–302]) s'il existe un énoncé du premier ordre satisfait par S telle que toute structure de type fini qui la satisfait est isomorphe à S. Nous montrons que toute structure bi-interprétable avec l'anneau des entiers est QFA et première. Nous appliquons ce résultat d'une part à certains groupes métabéliens et d'autre part aux anneaux commutatifs.
A finitely generated structure is said to be QFA (for quasi-finitely axiomatizable, see [A. Nies, Separating classes of groups by first order sentences, Internat. J. Algebra Comput. 13 (2003) 287–302]) if there exists a first order sentence satisfied by S such that every finitely generated structure satisfying it is isomorphic to S. We prove that every structure which is bi-interprétable with the ring of integers is QFA and prime. We apply this result on the one hand to some metabelian groups and on the other, to commutative rings.
@article{CRMATH_2007__345_2_59_0, author = {Anatole Khelif}, title = {Bi-interpr\'etabilit\'e et structures {QFA} : \'etude de groupes r\'esolubles et des anneaux commutatifs}, journal = {Comptes Rendus. Math\'ematique}, pages = {59--61}, publisher = {Elsevier}, volume = {345}, number = {2}, year = {2007}, doi = {10.1016/j.crma.2007.06.003}, language = {fr}, }
Anatole Khelif. Bi-interprétabilité et structures QFA : étude de groupes résolubles et des anneaux commutatifs. Comptes Rendus. Mathématique, Volume 345 (2007) no. 2, pp. 59-61. doi : 10.1016/j.crma.2007.06.003. https://comptes-rendus.academie-sciences.fr/mathematique/articles/10.1016/j.crma.2007.06.003/
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