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On parameterizations of rational orbits of some forms of prehomogeneous vector spaces

Takashi Taniguchi

math.NTarXiv:math/0608657

Abstract

In this paper, we consider the structure of rational orbit of some prehomogeneous vector spaces originally motivated by Wright and Yukie. After we give a refinement of Wright-Yukie's construction, we apply it to the inner forms of the D5 and E7 types. Parameterizations of reducible algebras for the cubic cases are included.

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