Generic singularities of symplectic and quasi-symplectic immersions
نویسندگان
چکیده
منابع مشابه
Local Symplectic Algebra and Simple Symplectic Singularities of Curves
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Proof of Corollary 1. Assume that X has only terminal singularities. Then Codim(Σ ⊂ X) ≥ 3. By Theorem, Σ has no codimension 3 irreducible components. Therefore Codim(Σ ⊂ X) ≥ 4. Conversely, assume Codim(Σ ⊂ X) ≥ 4. Take a resolution f : Y → X of X and denote by {Ei} the f -exceptional divisors. Since X has canonical singularities, we have KY = f KX +ΣaiEi with non-negative integers ai. One can...
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ژورنال
عنوان ژورنال: Mathematical Proceedings of the Cambridge Philosophical Society
سال: 2013
ISSN: 0305-0041,1469-8064
DOI: 10.1017/s0305004113000315