给出了张量A和A的k次幂Ak的Z-特征值的关系,作为应用,给出了弱对称非负张量Z-谱半径的新下界估计式,改进了某些已有结果.
Relationships of Z-eigenvalues between A4 and its k-th power .Ak are given. As an application, a new lower bound of Z-spectral radius for weakly symmetric nonnegative tensors is obtained, which improves some known results.