English
Arc spaces and singularities in the minimal model program - Lecture 4
Multi angle
Auteurs : de Fernex, Tommaso (Auteur de la Conférence)
CIRM (Editeur )
13A18 - Valuations and their generalizations [See also 12J20]
14B05 - Singularities
14E15 - Global theory and resolution of singularities
14E30 - Minimal model program (Mori theory, extremal rays)
14E18 - Arcs and motivic integration
CIRM (Editeur )
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Résumé :
The space of formal arcs of an algebraic variety carries part of the information encoded in a resolution of singularities. This series of lectures addresses this fact from two perspectives. In the first two lectures, we focus on the topology of the space of arcs, proving Kolchin's irreducibility theorem and discussing the Nash problem on families of arcs through the singularities of the variety; recent results on this problem are proved in the second lecture. The last two lectures are devoted to some applications of arc spaces toward a conjecture on minimal log discrepancies known as inversion of adjunction. Minimal log discrepancies are invariants of singularities appearing in the minimal model program, a quick overview of which is given in the third lecture.
Codes MSC : 13A18 - Valuations and their generalizations [See also 12J20]
14B05 - Singularities
14E15 - Global theory and resolution of singularities
14E30 - Minimal model program (Mori theory, extremal rays)
14E18 - Arcs and motivic integration
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Informations sur la Vidéo
Réalisateur : Hennenfent, GuillaumeLangue : Anglais Date de publication : 26/02/15 Date de captation : 13/02/15 Sous collection : Research School arXiv category : Algebraic Geometry Domaine : Algebraic & Complex Geometry Format : MP4 (.mp4) - HD Durée : 01:00:06 Audience : Researchers Download : https://videos.cirm-math.fr/2015-02-13_Fernex_part4.mp4 
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Informations sur la Rencontre
Nom de la rencontre : Young researchers in singularities / Jeunes chercheurs en singularitésOrganisateurs de la rencontre : Fichou, Goulwen ; Plénat, Camille Dates : 09/02/15 - 13/02/15 Année de la rencontre : 2015 URL Congrès : http://chairejeanmorlet-1stsemester2015....
Données de citation
DOI : 10.24350/CIRM.V.18698803Citer cette vidéo: de Fernex, Tommaso (2015). Arc spaces and singularities in the minimal model program - Lecture 4. CIRM. Audiovisual resource. doi:10.24350/CIRM.V.18698803 URI : http://dx.doi.org/10.24350/CIRM.V.18698803 |
Voir aussi
- [Multi angle] Arc spaces and singularities in the minimal model program - Lecture 3 / Auteur de la Conférence de Fernex, Tommaso.
- [Multi angle] Arc spaces and singularities in the minimal model program - Lecture 2 / Auteur de la Conférence de Fernex, Tommaso.
- [ Post-edited] Arc spaces and singularities in the minimal model program - Lecture 1 / Auteur de la Conférence de Fernex, Tommaso.
Bibliographie
- [1] de Fernex, T. (2013). Three-dimensional counter-examples to the Nash problem. Compositio Mathematica, 149(9), 1519-1534 - http://dx.doi.org/10.1112/S0010437X13007252
- [2] de Fernex, T., & and Docampo, R. (2014). Terminal valuations and the Nash problem.
- [3] Ein, L., Lazarsfeld, R., & Mustata, M. (2004). Contact loci in arc spaces. Compositio Mathematica, 140(5), 1229-1244 - http://dx.doi.org/10.1112/S0010437X04000429
- [4] Ein, L., Mustata, M., & Yasuda, T. (2003). Jet schemes, log discrepancies and inversion of adjunction. Inventiones Mathematicae, 153(3), 519-535 - http://dx.doi.org/10.1007/s00222-003-0298-3
- [5] Fernández de Bobadilla, J., & Pe Pereira, M. (2012). The Nash problem for surfaces. Annals of Mathematics. Second Series, 176(3), 2003-2029 - http://dx.doi.org/10.4007/annals.2012.176.3.11
- [6] Ishii, S., & Kollár, J. (2003). The Nash problem on arc families of singularities. Duke Mathematical Journal, 120(3), 601-620 - http://dx.doi.org/10.1215/S0012-7094-03-12034-7
- [7] Nash, John F. jun. (1995). Arc structure of singularities. Duke Mathematical Journal, 81(1), 31-38 - http://dx.doi.org/10.1215/S0012-7094-95-08103-4
