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- Title
The estimations of the lower bound of ρ(A<sup>–1</sup>).
- Authors
DU fei; CHANG Da-wei
- Abstract
The estimations of the lower bound of ρ(A–1) is discussed when matrix A is under a certain conditions and A is a strictly doubly diagonally dominant matrix. The ∣akk∣–Rk∣aii∣–Ri of every k,i subjected to n⩾k⩾i⩾1 is obtained. Further the new lower bound ... is received. It is proved that this new estimations is better than the lower existing bound, and the numercial example illustrates the effectiveness of the criteria.
- Subjects
MATHEMATICAL bounds; MATRICES (Mathematics); MATHEMATICS education; MATHEMATICAL formulas; ESTIMATION theory
- Publication
Basic Sciences Journal of Textile Universities / Fangzhi Gaoxiao Jichu Kexue Xuebao, 2013, Vol 26, Issue 4, p511
- ISSN
1006-8341
- Publication type
Article