摘要
The estimate of the eigenvalues is given when the off-diagonal elements in symmetric tridiagonal matrix are replaced by zero. The result can be applied to QR or QL algorithm. It is a generalization of Jiang’ s result in 1987. This estimate is sharper than Hager’s result in 1982 and could not
The estimate of the eigenvalues is given when the off-diagonal elements in symmetric tridiagonal matrix are replaced by zero. The result cm be applied to QR or QL algorithm. It is a generalization of Jiang's result in 1987. This estimate is sharper than Eager's result in 1982 and could not fail.
