Journal of Operator Theory, Vol. 64, No. 2 (Fall 2010), pp. 401-416 (16 pages) We investigate the behaviour of the spectrum of selfadjoint operators in Krein spaces under perturbations with uniformly ...
Our aim is to prove one relation between characteristic determinant and norms of orthogonal eigenvectors of eigenvalue problem for fourth order differential operator equation.That relation as appears ...
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