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二次李三系的分解定理

The Decomposition Theorems of Quadratic Lie Triple Systems
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摘要 有限维李三系称为二次的,如果它容许一个非退化的不变对称双线性型.无论是李三系分解为不可分解理想的直和,还是二次李三系分解为不可分解非退化理想的正交直和,证明了这两类分解在同构意义下都是唯一的. A finite dimensional Lie triple system is called quadratic if it possesses a nondegenerate invariant symmetric bilinear form.It is proved that either the decomposition of a Lie triple system into a direct sum of indecomposable ideals or the decomposition of a quadratic Lie triple system into an orthogonal direct sum of indecomposable nondegenerate ideals,is unique up to an isomorphism.
出处 《数学年刊(A辑)》 CSCD 北大核心 2011年第4期385-392,共8页 Chinese Annals of Mathematics
基金 河北省自然科学基金(No08M005 NoA2007000138)资助的项目
关键词 二次李三系 f-不可分解理想 非退化不变对称双线性型 正交直和 f-迷向的 Quadratic Lie triple system f-Indecomposable ideal Nondegenerate invariant symmetric bilinear form Orthogonal direct sum f-Isotropic
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