Comptes Rendus
Geometry/Analytic geometry
On the stability of flat complex vector bundles over parallelizable manifolds
[Sur la stabilité des fibrés vectoriels complexes plats sur les variétés parallélisables]
Comptes Rendus. Mathématique, Volume 356 (2018) no. 10, pp. 1030-1035.

Nous étudions les fibrés holomorphes plats sur les variétés parallélisables compactes G/Γ (avec G un groupe de Lie connexe complexe et Γ un réseau cocompact). Notre résultat principal décrit les fibrés holomorphes plats Eρ associés à des représentations irréductibles ρ:ΓGL(r,C). Nous démontrons que ces fibrés Eρ sont isomorphes à une somme directe En, avec E un fibré vectoriel stable de degré zéro.

Nous en déduisons un résultat de stabilité concernant les fibrés holomorphes plats Eρ de rang 2 sur les quotients G/Γ. Si ρ:ΓGL(2,C) est une représentation irréductible telle que le morphisme induit ρ:ΓPGL(2,C) ne s'étend pas à G, alors Eρ est stable.

We investigate the flat holomorphic vector bundles over compact complex parallelizable manifolds G/Γ, where G is a complex connected Lie group and Γ is a cocompact lattice in it. The main result proved here is a structure theorem for flat holomorphic vector bundles Eρ associated with any irreducible representation ρ:ΓGL(r,C). More precisely, we prove that Eρ is holomorphically isomorphic to a vector bundle of the form En, where E is a stable vector bundle. All the rational Chern classes of E vanish, in particular, its degree is zero.

We deduce a stability result for flat holomorphic vector bundles Eρ of rank 2 over G/Γ. If an irreducible representation ρ:ΓGL(2,C) satisfies the condition that the induced homomorphism ΓPGL(2,C) does not extend to a homomorphism from G, then Eρ is proved to be stable.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crma.2018.08.001
Indranil Biswas 1 ; Sorin Dumitrescu 2 ; Manfred Lehn 3

1 School of Mathematics, Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005, India
2 Université Côte d'Azur, CNRS, LJAD, France
3 Institut für Mathematik, Johannes Gutenberg Universität Mainz, 55099 Mainz, Germany
@article{CRMATH_2018__356_10_1030_0,
     author = {Indranil Biswas and Sorin Dumitrescu and Manfred Lehn},
     title = {On the stability of flat complex vector bundles over parallelizable manifolds},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {1030--1035},
     publisher = {Elsevier},
     volume = {356},
     number = {10},
     year = {2018},
     doi = {10.1016/j.crma.2018.08.001},
     language = {en},
}
TY  - JOUR
AU  - Indranil Biswas
AU  - Sorin Dumitrescu
AU  - Manfred Lehn
TI  - On the stability of flat complex vector bundles over parallelizable manifolds
JO  - Comptes Rendus. Mathématique
PY  - 2018
SP  - 1030
EP  - 1035
VL  - 356
IS  - 10
PB  - Elsevier
DO  - 10.1016/j.crma.2018.08.001
LA  - en
ID  - CRMATH_2018__356_10_1030_0
ER  - 
%0 Journal Article
%A Indranil Biswas
%A Sorin Dumitrescu
%A Manfred Lehn
%T On the stability of flat complex vector bundles over parallelizable manifolds
%J Comptes Rendus. Mathématique
%D 2018
%P 1030-1035
%V 356
%N 10
%I Elsevier
%R 10.1016/j.crma.2018.08.001
%G en
%F CRMATH_2018__356_10_1030_0
Indranil Biswas; Sorin Dumitrescu; Manfred Lehn. On the stability of flat complex vector bundles over parallelizable manifolds. Comptes Rendus. Mathématique, Volume 356 (2018) no. 10, pp. 1030-1035. doi : 10.1016/j.crma.2018.08.001. https://comptes-rendus.academie-sciences.fr/mathematique/articles/10.1016/j.crma.2018.08.001/

[1] L. Alessandrini; G. Bassanelli Compact p-Kähler manifolds, Geom. Dedic., Volume 38 (1991), pp. 199-210

[2] M.F. Atiyah Complex analytic connections in fibre bundles, Trans. Amer. Math. Soc., Volume 85 (1957), pp. 181-207

[3] I. Biswas Semistability of invariant bundles over G/Γ, II, C. R. Acad. Sci. Paris, Ser. I, Volume 350 (2012), pp. 277-280

[4] I. Biswas; S. Dumitrescu Holomorphic affine connections on non-Kähler manifolds, Int. J. Math., Volume 27 (2016) no. 11

[5] S. Dumitrescu; B. McKay Symmetries of holomorphic geometric structures on complex tori, Complex Manifolds, Volume 3 (2016), pp. 1-15

[6] J. Fu; S.-T. Yau A note on small deformations of balanced manifolds, C. R. Acad. Sci. Paris, Ser. I, Volume 349 (2011), pp. 793-796

[7] É. Ghys Déformations des structures complexes sur les espaces homogènes de SL(2,C), J. Reine Angew. Math., Volume 468 (1995), pp. 113-138

[8] É. Ghys Feuilletages holomorphes de codimension un sur les espaces homogènes complexes, Ann. Fac. Sci. Toulouse, Volume 5 (1996), pp. 493-519

[9] M. Gromov Rigid transformation groups (D. Bernard; Y. Choquet-Bruhat, eds.), Géométrie différentielle, Travaux en Cours, vol. 33, Hermann, Paris, 1988, pp. 65-141

[10] D. Huybrechts; M. Lehn The Geometry of Moduli Spaces of Sheaves, Aspects of Mathematics, vol. E31, Friedrich Vieweg & Sohn, Braunschweig, Germany, 1997

[11] S. Kobayashi Differential Geometry of Complex Vector Bundles, Princeton University Press/Iwanami Shoten, Princeton, NJ, USA/Tokyo, 1987

[12] M. Lackenby Some 3-manifolds and 3-orbifolds with large fundamental group, Proc. Amer. Math. Soc., Volume 135 (2007), pp. 3393-3402

[13] M. Lübke; A. Teleman The Kobayashi–Hitchin Correspondence, World Scientific, River Edge, NJ, USA, 1995

[14] J. Milson A remark on Ragunathan's vanishing theorem, Topology, Volume 24 (1985), pp. 495-498

[15] H.-C. Wang Complex parallelisable manifolds, Proc. Amer. Math. Soc., Volume 5 (1954), pp. 771-776

[16] J. Winkelmann Flat vector bundles over parallelizable manifolds, Forum Math., Volume 13 (2001), pp. 795-815

Cité par Sources :

Commentaires - Politique


Ces articles pourraient vous intéresser

Einstein–Hermitian connection on twisted Higgs bundles

Indranil Biswas; Tomás L. Gómez; Norbert Hoffmann; ...

C. R. Math (2010)


A symplectic analog of the Quot scheme

Indranil Biswas; Ajneet Dhillon; Jacques Hurtubise; ...

C. R. Math (2015)


Semistability of invariant bundles over G/Γ

Indranil Biswas

C. R. Math (2011)