Explicit Inversion Formulas for Toeplitz Band Matrices
Explicit Inversion Formulas for Toeplitz Band Matrices
复制标题
Toeplitz 带矩阵的显式反演公式
DOI:
10.1137/0606054
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发表时间:
1985
期刊:
影响因子:
--
通讯作者:
W. F. Trench
中科院分区:
文献类型:
--
作者:
W. F. Trench
Explicit formulas are given for the elements of $T_n^{ - 1} $ and the solution of $T_n X = Y$, where $T_n $ is an $( n + 1 ) \times ( n + 1 )$ Toeplitz band matrix with bandwidth $k\leqq n$. The formulas involve $k \times k$ determinants whose entries are powers of the zeros of a certain kth degree polynomial $P ( z )$ which is independent of n, or simple related functions of these zeros if any are repeated. It is shown that $T_n $ is invertible if and only if a certain $k \times k$ determinant involving these zeros is nonvanishing.