Comptes Rendus
Géométrie algébrique
Parties polaires et compactification ELSV
Comptes Rendus. Mathématique, Volume 351 (2013) no. 17-18, pp. 695-698.

On propose une construction alternative à une compactification – due à [6] – du champ des courbes lisses munies de fonctions méromorphes dʼordres fixés. Cette dernière est obtenue comme lʼadhérence du champ de départ dans un champ propre ; on donne une description modulaire des points du bord.

We give an alternative construction to a compactification—due to [6]—of the stack of smooth curves endowed with a meromorphic function having poles with fixed order. The original compactification is described as a closure of the initial stack in a proper stack; we give a modular description of the boundary points.

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DOI : 10.1016/j.crma.2013.09.004
Bashar Dudin 1

1 Laboratoire Manceau de mathématiques, avenue Olivier-Messiaen, 72085 Le Mans cedex 9, France
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Bashar Dudin. Parties polaires et compactification ELSV. Comptes Rendus. Mathématique, Volume 351 (2013) no. 17-18, pp. 695-698. doi : 10.1016/j.crma.2013.09.004. https://comptes-rendus.academie-sciences.fr/mathematique/articles/10.1016/j.crma.2013.09.004/

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[6] T. Ekedahl; S. Lando; M. Shapiro; A. Vainshtein Hurwitz numbers and intersections on moduli spaces of curves, Invent. Math., Volume 146 (2001) no. 2, pp. 297-327

[7] B. Fantechi; R. Pandharipande Stable maps and branch divisors, Compos. Math., Volume 130 (2002) no. 3, pp. 345-364

[8] J. Harris; D. Mumford On the Kodaira dimension of the moduli space of curves, Invent. Math., Volume 67 (1982) no. 1, pp. 23-88

[9] G. Kempf; F.F. Knudsen; D. Mumford; B. Saint-Donat Toroidal Embeddings. I, Lecture Notes in Mathematics, vol. 339, Springer-Verlag, Berlin, 1973

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