کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8255489 1533709 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Semistable rank 2 sheaves with singularities of mixed dimension on P3
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
Semistable rank 2 sheaves with singularities of mixed dimension on P3
چکیده انگلیسی
We describe new irreducible components of the Gieseker-Maruyama moduli scheme M(3) of semistable rank 2 coherent sheaves with Chern classes c1=0,c2=3,c3=0 on P3, general points of which correspond to sheaves whose singular loci contain components of dimensions both 0 and 1. These sheaves are produced by elementary transformations of stable reflexive rank 2 sheaves with c1=0, c2=2 along a disjoint union of a projective line and a collection of points in P3. The constructed families of sheaves provide first examples of irreducible components of the Gieseker-Maruyama moduli scheme such that their general sheaves have singularities of mixed dimension.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Geometry and Physics - Volume 129, July 2018, Pages 90-98
نویسندگان
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