This includes normal and generalized inverse eigenvalue problem which includes the additive, multiplicative classical inverse eigenvalue problems as special cases.
包括常义特征值反问题和广义征值反问题，这类问题包括加法和乘法经典代数特征值反问题。
2
The authors characterize the forms of additive invertable operators preserving inverse matrix of the upper triangular matrix space over a field which characteristic is not 2 or 3 .