The identical estimates of spectral norms for circulant matrices with binomial coefficients combined with fibonacci numbers and lucas numbers entries

Improved estimates for spectral norms of circulant matrices are investigated,and the entries are binomial coefficients combined with either fibonacci numbers or lucas numbers. employing the properties of given circulant matrices,this paper improves the inequalities for their spectral norms,and gets corresponding identities of spectral norms. moreover,by some well-known identities,the explicit identities for spectral norms are obtained. some numerical tests are listed to verify the results. © 2014 jianwei zhou.