三对角N × N复Hamilton算子的谱逆问题
Inverse Spectral Problems for Tridiagonal N by N Complex Hamiltonians
摘要:
本文对具有复数元素的有限阶三对角对称矩阵(Jacobi矩阵)引入了广义谱函数的概念。广义谱函数的结构描述的谱数据组成的特征值和归一化数的矩阵。研究了广义谱函数和谱数据的反问题。这样,得到了一个构造具有实特征值的复三对角矩阵的过程。
英文摘要:
In this paper, the concept of generalized spectral function is introduced for finite-order tridiagonal symmetric matrices (Jacobi matrices) with complex entries. The structure of the generalized spectral function is described in terms of spectral data consisting of the eigenvalues and normalizing numbers of the matrix. The inverse problems from generalized spectral function as well as from spectral data are investigated. In this way, a procedure for construction of complex tridiagonal matrices having real eigenvalues is obtained.
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