Nous donons deux caractérisations de l'ordre sur les arbres de Böhm induit par le modèle D∞, dont l'une est nouvelle et formalise une propriété de continuité de l'η-expansion infinie : si pour tout approximant fini A de , il existe un approximant fini B de tel que A est un sous-arbre de B, modulo une η-égalité finie et modulo un nombre fini d'η-expansions infinies de variables.
We give two characterizations of the ordering on Böhm trees induced by the D∞ model, one of which formalizes a continuity property of infinite η-expansion: if for any finite approximant A of there exists a finite approximant B of such that A is a sub-tree of B, modulo finitely many η-equalities and finitely many infinite η-expansions of variables.
@article{CRMATH_2002__334_1_77_0, author = {Pierre-Louis Curien}, title = {Sur l'$ \mathbf{\eta }$-expansion infinie}, journal = {Comptes Rendus. Math\'ematique}, pages = {77--82}, publisher = {Elsevier}, volume = {334}, number = {1}, year = {2002}, doi = {10.1016/S1631-073X(02)02095-2}, language = {fr}, }
Pierre-Louis Curien. Sur l'$ \mathbf{\eta }$-expansion infinie. Comptes Rendus. Mathématique, Volume 334 (2002) no. 1, pp. 77-82. doi : 10.1016/S1631-073X(02)02095-2. https://comptes-rendus.academie-sciences.fr/mathematique/articles/10.1016/S1631-073X(02)02095-2/
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