| HAL : hal-00656792, version 2 |
| arXiv : 1201.1114 |
| Fiche détaillée | Récupérer au format |
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| Versions disponibles : | v1 (05-01-2012) | v2 (21-01-2012) | v3 (19-09-2012) |
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| Plus ultra |
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| Frank Olaf Wagner 1 |
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| (20/01/2012) |
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| We develop some basic simplicity-theoretic facts for quasi-finitary ultraimaginaries, i.e.\ classes of finite tuples modulo $\emptyset$-invariant equivalence relations, in a supersimple theory. We also show that they are geometrically eliminable in a weak sense: If $e$ is an ultraimaginary definable over a tupe $a$ with $SU(a)<\omega^{\alpha+1}$, then $e$ is eliminable up to rank $<\omega^alpha$. Finally, we show some uniform versions of the weak canonical base property. |
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| 1 : | Institut Camille Jordan (ICJ) |
| CNRS : UMR5208 – Université Claude Bernard - Lyon I – Ecole Centrale de Lyon – Institut National des Sciences Appliquées (INSA) - Lyon | |
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| AGL |
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| Domaine | : | Mathématiques/Logique |
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| stability theory – simplicity theory – ultraimaginary – elimination – weak canonical base property |
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| Liste des fichiers attachés à ce document : | ||||||||||
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| hal-00656792, version 2 | |
| http://hal.archives-ouvertes.fr/hal-00656792 | |
| oai:hal.archives-ouvertes.fr:hal-00656792 | |
| Contributeur : Frank Olaf Wagner | |
| Soumis le : Vendredi 20 Janvier 2012, 17:47:44 | |
| Dernière modification le : Samedi 21 Janvier 2012, 08:58:43 | |