ON CERTAIN AUTOMORPHIC FORMS OF Sp(1, q) (ARAKAWA'S RESULTS AND RECENT PROGRESS)
ON CERTAIN AUTOMORPHIC FORMS OF Sp(1, q) (ARAKAWA'S RESULTS AND RECENT PROGRESS)
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关于 Sp(1, q) 的某些自同构形式(ARAKAWA 的结果和最新进展)
DOI:
10.1142/9789812774415_0014
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发表时间:
2006
期刊:
影响因子:
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通讯作者:
Hiroaki Narita
中科院分区:
文献类型:
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作者:
Hiroaki Narita
Around the beginning of the 1980s, Professor Tsuneo Arakawa initiated the research of certain non-holomorphic automorphic forms on the real symplectic group Sp (1, q) of signature (1+, q-). In [14] we understood them as automorphic forms on Sp (1, q) generating quaternionic discrete series (for the definition of this discrete series, see Gross-Wallach [8]). Arakawa gave two published works [2] and [3] for the research. They deal with an explicit dimension formula for the spaces of such automorphic forms with respect to neat non-uniform lattice subgroups. On the other hand, Arakawa left us several unpublished notes on the study of such forms. In one of them he formulated a theta lifting from elliptic cusp forms to automorphic forms on Sp (1, q), which is inspired by Kudla's work [13] on a theta lifting from elliptic modular forms to holomorphic automorphic forms on SU (1, q). In addition to this, there is his unpublished work on the spinor L-function attached to the automorphic forms on Sp (1, 1) above. He considered it by following the method of Andrianov [1](see also [4]). The aim of this note is two-fold. One aim is to survey Arakawa's result on the dimension formula and the other to explain our recent result on Arakawa's theta lifting together with his result. As for the latter work, we proved that the images of the lifting are bounded automorphic forms on