Laplace Operator and Polynomial Invariants
Laplace Operator and Polynomial Invariants
复制标题
拉普拉斯算子和多项式不变量
DOI:
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发表时间:
1998
期刊:
影响因子:
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通讯作者:
A. V. Iltyakov
中科院分区:
文献类型:
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作者:
A. V. Iltyakov
Abstract Let A be a finite dimensional simple algebra (not necessarily associative) over the field of complex numbers C , and let G denote the automorphism group Aut( A ). Suppose that A has a symmetric nondegenerate associative G -invariant bilinear form 〈 x , y 〉 and a compact real form, i.e., a subalgebra B over R of dimension dim R B = dim C A , where A is equal to the span of B over C and the restriction of 〈 x , y 〉 to B is positive definite. We describe generators of the algebra of polynomial G -invariants of a system of several vectors from A in terms of 〈 x , y 〉 and Laplace operators. In particular, we give generators of the algebra of polynomial invariants of the adjoint representation of a simple linear algebraic group of any exceptional type ≠ E 6 . As a consequence, we get the First Main Theorem on matrix invariants, invariants of minimal representation of G 2 and F 4 .