特征结构配置方法（个人），希望对大家有帮助！-EIGS Find a few eigenvalues and eigenvectors of a matrix using ARPACK

function A = circulant(x) function A = circulant(x) return square circulant matrix with first row x barnett 2/5/08 x = x(:) A = toeplitz([x(1) x(end:-1:2)], x) -function A = circulant(x) function A = circulant(x) retu