En utilisant notre résultat précédent, Fu (Invent. Math. 151 (2003) 167–186), nous montrons qu'étant données deux résolutions symplectiques projectives Z1 et Z2 d'une adhérence d'orbite nilpotente dans une algèbre de Lie simple classique, Z1 est déformation équivalente à Z2. En particulier, ceci vérifie une conjecture « folklore » sur les résolutions symplectiques pour les singularités symplectiques.
Based on our previous work, Fu (Invent. Math. 151 (2003) 167–186), we prove that, given any two projective symplectic resolutions Z1 and Z2 of a nilpotent orbit closure in a complex simple Lie algebra of classical type, Z1 is deformation equivalent to Z2. This provides support for a ‘folklore’ conjecture on symplectic resolutions for symplectic singularities.
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@article{CRMATH_2003__337_4_277_0, author = {Fu, Baohua}, title = {Symplectic resolutions for nilpotent orbits {(II)}}, journal = {Comptes Rendus. Math\'ematique}, pages = {277--281}, publisher = {Elsevier}, volume = {337}, number = {4}, year = {2003}, doi = {10.1016/S1631-073X(03)00346-7}, language = {en}, url = {http://archive.numdam.org/articles/10.1016/S1631-073X(03)00346-7/} }
TY - JOUR AU - Fu, Baohua TI - Symplectic resolutions for nilpotent orbits (II) JO - Comptes Rendus. Mathématique PY - 2003 SP - 277 EP - 281 VL - 337 IS - 4 PB - Elsevier UR - http://archive.numdam.org/articles/10.1016/S1631-073X(03)00346-7/ DO - 10.1016/S1631-073X(03)00346-7 LA - en ID - CRMATH_2003__337_4_277_0 ER -
Fu, Baohua. Symplectic resolutions for nilpotent orbits (II). Comptes Rendus. Mathématique, Tome 337 (2003) no. 4, pp. 277-281. doi : 10.1016/S1631-073X(03)00346-7. http://archive.numdam.org/articles/10.1016/S1631-073X(03)00346-7/
[1] Symplectic singularities, Invent. Math., Volume 139 (2000), pp. 541-549
[2] Nilpotent Orbits in Semi-Simple Lie Algebras, Van Nostrand Reinhold, New York, 1993
[3] Symplectic resolutions for nilpotent orbits, Invent. Math., Volume 151 (2003), pp. 167-186
[4] Uniqueness of crepant resolutions and symplectic singularities | arXiv
[5] Polarizations in the classical groups, Math. Z., Volume 160 (1978), pp. 217-234
[6] Compact hyper-Kähler manifolds: basic results, Invent. Math., Volume 135 (1999), pp. 63-113
[7] Symplectic resolutions: deformations and birational maps | arXiv
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