Sur l'-expansion infinieOn infinite η-expansion |
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Authors: | Pierre-Louis Curien |
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Institution: | PPS, case 7014, CNRS & Université Paris-7, 2, place Jussieu, 75251 Paris cedex 05, France |
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Abstract: | 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. To cite this article: P.-L. Curien, C. R. Acad. Sci. Paris, Ser. I 334 (2002) 77–82 |
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