Algebraic Geometry/Analytic Geometry
The sheaf of nonvanishing meromorphic functions in the projective algebraic case is not acyclic
[Le faisceau des fonctions méromorphes non nulles sur une variété algébrique projective n'est pas acyclique]
Comptes Rendus. Mathématique, Tome 348 (2010) no. 5-6, pp. 291-293.

Sur une variété algébrique projective lisse X/C, soit MX le faisceau des germes de fonctions méromorphes non nulles pour la topologie analytique de X. Nous démontrons un certain nombre de résultats de non annulation pour la cohomologie H(X,MX). En particulier, le faisceau MX est acyclique si et seulement si X est de dimension 1.

Let X/C be a projective algebraic manifold, and MX be the sheaf of nonvanishing meromorphic functions on X in the analytic topology. We prove a number of nonvanishing results for H(X,MX). In particular, MX is acyclic iff dimX=1.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crma.2010.02.008
Chen, Xi 1 ; Kerr, Matt 2 ; Lewis, James D. 1

1 632 Central Academic Building, University of Alberta, Edmonton, Alberta T6G 2G1, Canada
2 104 Math. Sciences Bldg., Durham University, Durham, DH1 3LE, UK
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Chen, Xi; Kerr, Matt; Lewis, James D. The sheaf of nonvanishing meromorphic functions in the projective algebraic case is not acyclic. Comptes Rendus. Mathématique, Tome 348 (2010) no. 5-6, pp. 291-293. doi : 10.1016/j.crma.2010.02.008. http://www.numdam.org/articles/10.1016/j.crma.2010.02.008/

[1] Bombieri, E.; Husemöller, D. Classification and embeddings of surfaces, Proceedings of Symposia in Pure Mathematics, Volume 29 (1975), pp. 329-420

[2] Dieudonné, J. Panorama des Mathématiques Pures, Gauthier–Villars, 1977

[3] Lewis, J.D. A Survey of the Hodge Conjecture, CRM Monograph Series, vol. 10, AMS, Providence, 1999

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