This paper, as a natural sequel to [1], gives the further consideration of problem I posed by Liao Anping and Guo Zhong in [2]: given X, Z ∈ Rn×m, Y, W ∈ Rn×l, find A ∈ R0n×n such that AX = Z, yTA = WT, where R0...
It is proved that the additive inverse eigenvalue problem is equivalent to a polynomial system. By studying the system we obtain some new sufficient conditions on the solvabitity, and some numerical methods. Some nume...
In this paper, we consider the following two problems: Problem i. Given X ∈ Rmxn,A = diag(λ1,…, λm) > 0, find A E BSR such that where ||AX-X∧||=min, is Frobenius norm, BSR: is the set of all n x n bisymmetric n...
A = (aij) Rn×n is termed bisymmetric matrix if We denote the set of all n×n bisymmetric matrices by BSRn×n Let Where when n =2k, and n = 2k+1, In this paper, we discuss the following two problems: Problem Ⅰ. Giv...
In 1995 Liao Anping and Guo Zhong in [1] raised a problem that a class of left and right inverse eigenvalue problem for semipositive subdefinite matrices was not touched and wanted to research. In this paper, we will ...
This paper discuss the following two problems:Problem I. Given . Find A,such thatAX=XA,where BSRn×n is the set of all n × n bisymmetric matrices.Problem II. Given Find A SE such that where SE is the solution set of ...
In this paper, we concerns the sufficient conditions for the solubility of the mul tiplicative inverse eigenvalue problem. With the help of the topological mapping degree we give some new sufficient conditions, with i...