Some moduli spaces for rank 2 stable reflexive sheaves on
Some moduli spaces for rank 2 stable reflexive sheaves on
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2 阶稳定自反滑轮的一些模空间
DOI:
10.1090/s0002-9947-1987-0869229-0
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发表时间:
1987
影响因子:
1.3
通讯作者:
R. Miró
中科院分区:
文献类型:
--
作者:
R. Miró
. In [Ma], Maruyama proved that the set M(c\,c2, c3) of isomorphism classes of rank 2 stable reflexive sheaves on P3 with Chern classes (q, c2,c3) has a natural structure as an algebraic scheme. Until now, there are no general results about these schemes concerning dimension, irreducibility, rationality, etc. and only in a few cases a precise description of them is known. This paper is devoted to the following cases: (i) M(-\,c2,c\ - 2rc2 + 2r(r + 1)) with c2 > 4, 1 <r< (-1 + ^4c2 - 7)/2; and (ii) A/(-l,c2,c| - 2(r - l)c2) with c2>8, 2 « r«(-1 + y^c, - 7)/2.