Chern classes of reflexive sheaves on normal surfaces
Chern classes of reflexive sheaves on normal surfaces
复制标题
法向表面上反身滑轮的陈省级
DOI:
10.1007/s002090000149
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发表时间:
2000
影响因子:
0.8
通讯作者:
A. Langer
中科院分区:
文献类型:
--
作者:
A. Langer
Abstract. We define Chern classes of reflexive sheaves using Wahl's relative local Chern classes of vector bundles. The main result of the paper bounds contributions of singularities of a sheaf to the Riemann–Roch formula. Using it we are able to prove inequality in Wahl's conjecture on relative asymptotic RR formula for rank 2 vector bundles. Moreover, we prove that if Wahl's conjecture is true for a singularity then it is true for any its quotient. This implies Wahl's conjecture for quotient singularities and for quotients of cones over elliptic curves.