Perturbed Toeplitz Matrices and Their LU-Decompositions

被引：1
作者：
Chu, Wenchang [1 ,2 ]
Kilic, Emrah [3 ]
机构：
[1] Zhoukou Normal Univ, Sch Math & Stat, Zhoukou 466001, Henan, Peoples R China
[2] Univ Salento, Dept Math & Phys, I-73100 Lecce, Italy
[3] TOBB Univ Econ & Technol, TR-06560 Ankara, Turkiye
来源：
MATHEMATICAL NOTES | 2023年 / 113卷 / 1-2期
关键词：
Toeplitz matrix; tetradiagonal matrix; LU-decomposition; determinant; EIGENVALUES;
D O I：
10.1134/S0001434623010054
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
Two tetradiagonal Toeplitz matrices perturbed by a 2 x 2 matrix at the upper right corner are examined. Their LU-decompositions are explicitly given. As a consequence, their determinant evaluations confirm the conjectured determinant values of two numerical matrices made recently by Andelic and Fonseca (2020).
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页码：39 / 48
页数：10
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