The stable cohomology of the Satake compactification of A g
The stable cohomology of the Satake compactification of A g
复制标题
Ag 佐竹紧致化的稳定上同调
DOI:
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
JIAMING CHEN
中科院分区:
文献类型:
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作者:
JIAMING CHEN
Charney and Lee have shown that the rational cohomology of the Satake–Baily–Borel compactification A bb g of A g stabilizes as g ! 1 and they computed this stable cohomology as a Hopf algebra. We give a relatively simple algebrogeometric proof of their theorem and show that this stable cohomology comes with a mixed Hodge structure of which we determine the Hodge numbers. We find that the mixed Hodge structure on the primitive cohomology in degrees 4r C 2 with r (cid:21) 1 is an extension of Q . (cid:0) 2r (cid:0) 1 / by Q . 0 / ; in particular, it is not pure.
影响因子:
0.7
作者:
Esnault, Hélène;Harris, Michael
通讯作者:
Harris, Michael