Absolute Chow-Künneth projectors for modular varieties

Absolute Chow-Künneth projectors for modular varieties
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DOI:
10.1515/crll.2005.2005.580.139
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发表时间:
2005-03
期刊:
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通讯作者:
B. Gordon;M. Hanamura;J. Murre
B. Gordon;M. Hanamura;J. Murre
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其他
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作者:
B. Gordon;M. Hanamura;J. Murre

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据推测,对于任意X,都存在chow - kn - nneth投影。注意Pi的上同类是H / x XÞ中对角线类的k<s:1>第n个分量。所以这个猜想比格罗滕迪克的猜想(C)在他的标准猜想[Gr], [Kl]中的猜想更强——对角线的k<s:1>第n次分量是代数循环的类。此外,投影仪Pi应满足附加性质[Mu 2]。
It is conjectured that Chow-Künneth projectors exist for any X . Note the cohomology classes of Pi are the Künneth components of the diagonal class in H ðX XÞ. So the conjecture is stronger than a conjecture of Grothendieck—Conjecture (C) in his standard conjectures, [Gr], [Kl]—that the Künneth components of the diagonal be classes of algebraic cycles. Further, the projectors Pi should satisfy additional properties, [Mu 2].