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Picard groups of severi varieties

 

作者: Dan Edidin,  

 

期刊: Communications in Algebra  （Taylor Available online 1994）
卷期: Volume 22, issue 6  

页码: 2073-2081

 

ISSN:0092-7872

 

年代: 1994

 

DOI:10.1080/00927879408824956

 

出版商: Gordon and Breach Science Publishers Ltd.

 

数据来源: Taylor

 

摘要:

We show that Severi varieties of sufficiently nodal plane curves have rational Picard group zero. The technique is to factor the natural map from the Severi variety to the moduli space of curves into a composition of fibrations each of which is well understood.

 

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