Saito-Kurokawa lifts and applications to the Bloch-Kato conjecture
Saito-Kurokawa lifts and applications to the Bloch-Kato conjecture
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DOI:
10.1112/s0010437x06002466
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发表时间:
2007-03-01
影响因子:
1.8
通讯作者:
Brown, Jim
中科院分区:
文献类型:
--
作者:
Brown, Jim
Let f be a newform of weight 2k - 2 and level 1. In this paper we provide evidence for the Bloch-Kato conjecture for modular forms. We demonstrate an implication that under suitable hypotheses if (omega) over bar \L-a\g(k, f) then p \ #H-f (Q, W-f (1 - k)) where p is a suitably chosen prime and (omega) over bar a uniformizer of a finite extension K/Q(p). We demonstrate this by establishing a congruence between the Saito-Kurokawa lift F-f of f and a cuspidal Siegel eigenform G that is not a Saito-Kurokawa lift. We then examine what this congruence says in terms of Galois representations to produce a non-trivial p-torsion element in H-f(1)(Q, W-f (1 - k)).