Toeplitz 矩阵是一种比较特殊的矩阵:其中任何一条对角线的元素取相同的值,即 An=⎡⎣⎢⎢⎢⎢⎢⎢⎢⎢⎢a0a1a2⋮ana−1a0a1⋮an−1a−2a−1a0⋱⋯⋯⋯⋱⋱a1a−na−n+1⋮a−1a0⎤⎦⎥⎥⎥⎥