Equivalence of almost root vectors of polynomial beams of operators von Radzievsky , G. V., Радзиевский , Г. В.

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Multiple minimality of the root vectors of polynomial operators bunch, perturbed by analytical operator-function $S (\lambda)$ с $S (\infty) = 0$ outside the circle von Radzievsky, G. V., Радзиевский, Г. В.

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