Some P.V.-equivalences and a classification of 2-simple prehomogeneous vector spaces of type
Some P.V.-equivalences and a classification of 2-simple prehomogeneous vector spaces of type
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一些 P.V. 等价性和 2-简单预齐次向量空间的分类
DOI:
10.1090/s0002-9947-1988-0951617-6
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发表时间:
1988
影响因子:
1.3
通讯作者:
M. Inuzuka
中科院分区:
文献类型:
--
作者:
Tatsuo Kimura;S. Kasai;Masanobu Taguchi;M. Inuzuka
A classification of 2-simple prehomogeneous vector spaces is completed by using some P.V.-equivalences together with [3]. Some part is very different from the previous classification of the irreducible or simple cases [1, 2], and some new method is necessary. This result shows the difficult point of a classification problem of reductive prehomogeneous vector spaces. Introduction. In M. Sato and T. Kimura [1], all irreducible prehomogeneous vector spaces (abbreviated irreducible P.V.'s) are classified up to castling-equivalence, and it is proved that any irreducible P.V. is castling-equivalent to a 2-simple P.V. (or to (SL(m) X SL(m) X GL(2), A1 X A1 X A1) with m = 2,3). Therefore, as a step to a classification of the general case, it is natural to classify all nonirreducible 2-simple P.V.'s. In this paper, we shall classify all 2-simple P.V.'s of type II and give the complete list of them up to strong equivalence in the sense of Definition 4, p. 36 in [1]. However we need various P.V.-equivalences (cf. Propositions 1.7; 1.12; 1.34; 1.36; 1.37, Theorem 1.16 and its Corollary; Corollary 1.26, Definition 1.31, Remark 1.32) to carry out the classification, and hence, first we shall prove them. We also investigate the regularity in some cases. Since all 2-simple P.V.'s of type I are already classified in [3], this completes the classification of all 2-simple P.V.'s. Here we say that (G, p, V) (or simply (G, p)) is a 2-simple P.V. if it is a prehomogeneous vector space of the following form: G = GL(1)k?s?t XG, X G2 where G1 and G2 are simple algebraic groups, p = the composition of the scalar multiplications GL (l)k+s + on each irreducible component and the representation p' = p1 ? p'1 + *** +Pk ? P'k+ (a1 + *** +s) ?1 + 1 ? (T1, + *** +T,) ofthegroupG1 x G2 where pi, aj (resp. p', Tj) are nontrivial irreducible representations of G1 (resp. G2). We write (G, p', V) instead of (G, p, V) for simplicity. To avoid confusion, we write + instead of (. Clearly each (GL(1) X G1 x G2, pi ? p) (i = 1,..., k) is an irreducible 2-simple P.V. If at least one of them is a nontrivial P.V. (see Definition 1.1), we call it a 2-simple P.V. of type I. On the other hand, if all of them are trivial P.V.'s, we call it a 2-simple P.V. of type II. In this case, we have G2= SL(n), Received by the editors March 3, 1986 and, in revised form, July 30, 1986. 1980 Mathematics Subject Classification (1985 Revision). Primary 11R20, 11R29; Secondary 11N25, 11R18. 01988 American Mathematical Society 0002-9947/88 $1.00 + $.25 per page
DOI:
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发表时间:
2007
期刊:
影响因子:
--
作者:
Tomoyoshi Ibukiyama;Hidenori Katsurada;Yumiko Hironaka;木村 達雄;Tatsuo Kimura;佐藤 文広;佐藤 文広;伊吹山 知義;Tomoyoshi Ibukiyama;佐藤 文広;佐藤 文広;Fumihiro Sato;広中 由美子;伊吹山 知義;Tomoyoshi Ibukiyama;広中 由美子;広中 由美子;Yumiko Hironaka;木村 達雄;Tatsuo Kimura
通讯作者:
Tatsuo Kimura
DOI:
--
发表时间:
2010
期刊:
保型形式・保型表現およびそれに伴うL函数と周期の研究
影响因子:
--
作者:
鈴木正俊;神谷諭一;山木壱彦;平之内俊郎;鈴木正俊
通讯作者:
鈴木正俊
DOI:
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发表时间:
2020
期刊:
Algebraic number theory and related topics 2016, RIMS K\^{o}ky\^{u}roku Bessatsu
影响因子:
--
作者:
駒場敦;城野悠志;中本和典;山崎愛一;A. Yukie
通讯作者:
A. Yukie