Hyperbolicity of algebras with involution over a given extension |
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Authors: | Jung-Miao Kuo Su Chi Wen |
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Institution: | a Department of Applied Mathematics, National Chung-Hsing University, Taichung, Taiwanb Indiana University, Bloomington, IN 47405, United States |
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Abstract: | Let F be a field and (A,σ) a central simple F-algebra with involution. Let π(t) be a separable polynomial over F. Let F(π)=Ft]/(π(t)). Tignol considered the question whether the algebra A⊗F(π) is hyperbolic. He introduced the algebra Hπ, which is universal for this question. Haile and Tignol determined the structure of the algebra Hπ and introduced a certain homomorphic image Cπ of Hπ. In this paper, we give a new characterization of Cπ and introduce a new algebra Aπ that classifies the commutative algebras with involution that become hyperbolic over F(π). We determine the structure of Aπ and use it to examine some examples. |
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Keywords: | 16W10 |
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