Abstract
In this work, we study the \(r\)-circulant matrix \( C_r = Circ_r(c_0, c_1,c_2,...,c_{n-1})\) such that the entries of \(C_r \) are \(c_i=M_{k,a+ib}\) or \(c_i=R_{k,a+ib}\), where \(M_{k,a+ib}\) and \(R_{k,a+ib}\) are \(k\)-Mersenne and \(k\)-Mersenne–Lucas numbers, respectively. We obtain the eigenvalues and determinants for the matrices and some important identities for the \(k\)-Mersenne and \(k\)-Mersenne–Lucas numbers. Furthermore, we find norms and bounds estimation for the spectral norm for these \(r\)-circulant matrices.
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Acknowledgments
The authors are thankful to the anonymous referee for their valuable and constructive comments which helped substantially to improve the manuscript in its present form.
Funding
The first and second authors would like to thank the University Grant Commission (UGC), India, for the research fellowship (1057/CSIR-UGC NET JUNE 2018 and 1196/CSIR-UGC NET JUNE 2019).
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Kumari, M., Prasad, K., Özkan, E. et al. On the Norms and Eigenvalues of \(r\)-Circulant Matrices with \(k\)-Mersenne and \(k\)-Mersenne–Lucas Numbers. Math Notes 114, 522–535 (2023). https://doi.org/10.1134/S0001434623090225
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DOI: https://doi.org/10.1134/S0001434623090225