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math.SP2016
On the boundary of the numerical range of some Jacobi operators
R. Birbonshi, A. Patra, P. D. Srivastava
In this paper, we study the numerical range of Jacobi operators and it is shown that under certain conditions, the boundary of the numerical range of these operators can be non-rou…
math.SP2016
On some study of the Fine Spectra of -th band triangular matrices
R. Birbonshi, P. D. Srivastava
It has been observed that for the 2nd and 3rd band lower triangular matrices and , only the boundary of the spectrum gives the continuous spectrum while the rest…