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NEAR-DIAGONAL REPRESENTATIVES OF CONJUGACY CLASSES OF ORTHOGONAL MATRICES

机译:正交矩阵共轭类的近对角表示

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Let F be an algebraically closed field of characteristic not 2. Define the orthogonal group, O-n(F), as the subgroup of GL(n)(F) consisting of matrices X such that X-1 = X', the transpose of X. We prove that any A is an element of O-n(F) having no elementary divisors (t +/- 1)(k), with k even, is conjugate to a direct sum of zigzag matrices. A zigzag matrix is a special kind of a band matrix with only five nonzero diagonals. We also propose a conjecture about the case excluded above.
机译:令F为特征不是2的代数封闭场。将正交群On(F)定义为GL(n)(F)的子群,它由矩阵X组成,使得X-1 = X',即X的转置我们证明任何A是On(F)的元素,不具有基本除数(t +/- 1)(k),且偶数k均与之字形矩阵的直接和共轭。之字形矩阵是一种特殊的带状矩阵,只有五个非零对角线。我们还对上述排除的情况提出一个推测。

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