[Les applications de l’invariant de Bieri–Neumann–Strebel aux groupes de Kähler]
We give several applications of the Bieri–Neumann–Strebel invariant on Kähler groups. Specifically, we provide a simpler proof of the Napier–Ramachandran theorem on the HNN decomposition of Kähler groups and show that amenable Kähler groups have an empty complement of the BNS invariant.
Nous donnons plusieurs applications de l’invariant de Bieri–Neumann–Strebel sur les groupes de Kähler. Plus précisément, nous fournissons une preuve plus simple du théorème de Napier–Ramachandran sur la décomposition HNN des groupes de Kähler et montrons que les groupes de Kähler aménables ont un complément vide de l’invariant BNS.
Révisé le :
Accepté le :
Publié le :
Yuan Liu  1
CC-BY 4.0
@article{CRMATH_2026__364_G1_39_0,
author = {Yuan Liu},
title = {The applications of {Bieri{\textendash}Neumann{\textendash}Strebel} invariant on {K\"ahler} groups},
journal = {Comptes Rendus. Math\'ematique},
pages = {39--44},
year = {2026},
publisher = {Acad\'emie des sciences, Paris},
volume = {364},
doi = {10.5802/crmath.811},
language = {en},
}
Yuan Liu. The applications of Bieri–Neumann–Strebel invariant on Kähler groups. Comptes Rendus. Mathématique, Volume 364 (2026), pp. 39-44. doi: 10.5802/crmath.811
[1] Fundamental groups of compact Kähler manifolds, Mathematical Surveys and Monographs, 44, American Mathematical Society, 1996 | DOI | MR | Zbl
[2] A geometric invariant of discrete groups, Invent. Math., Volume 90 (1987) no. 3, pp. 451-477 | DOI | MR | Zbl
[3] Geometric invariants for discrete groups (Unpublished monograph)
[4] Trees, valuations, and the Bieri–Neumann–Strebel invariant, Invent. Math., Volume 90 (1987) no. 3, pp. 479-504 | DOI | MR | Zbl
[5] L’invariant de Bieri–Neumann–Strebel des groupes fondamentaux des variétés kählériennes, Math. Ann., Volume 348 (2010) no. 1, pp. 119-125 | DOI | MR
[6] Rank gradients of infinite cyclic covers of Kähler manifolds, J. Group Theory, Volume 19 (2016) no. 5, pp. 941-957 | DOI | MR | Zbl
[7] Filtered ends, proper holomorphic mappings of Kähler manifolds to Riemann surfaces, and Kähler groups, Geom. Funct. Anal., Volume 17 (2008) no. 5, pp. 1621-1654 | DOI | MR | Zbl
[8] Lectures on Kähler groups, Princeton Mathematical Series, 52, Princeton University Press, 2025 | MR | Zbl
[9] Lefschetz theorems for the integral leaves of a holomorphic one-form, Compos. Math., Volume 87 (1993) no. 1, pp. 99-113 | MR | Numdam | Zbl
Cité par Sources :
Commentaires - Politique
