Application of the Faber polynomials in proving combinatorial identities von F. H. Abdullaiev, Imash kyzy, V. V. Savchuk

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Isometry of the subspaces of solutions of systems of differential equations to the spaces of real functions von F. H. Abdullaiev, D. M. Bushev, Imash kyzy, Yu. I. Kharkevych

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