Abstract
We pose the problem of minimization for the relative preimage problem and prove a minimization theorem. The relative common preimage problem for a finite system of maps, whose particular cases are the relative coincidence and common root problems for finitely many maps, is reduced to the relative preimage problem. As corollaries, results concerning the relative coincidence problems for two maps, problems of fixed points and roots are obtained; these results, with certain distinctions, can be found in known papers by other authors.
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Translated from Matematicheskie Zametki, vol. 80, no. 2, 2006, pp. 282–295.
Original Russian Text Copyright © 2006 by O. D. Frolkina.
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Frolkina, O.D. Relative preimage problem. Math Notes 80, 272–283 (2006). https://doi.org/10.1007/s11006-006-0136-1
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DOI: https://doi.org/10.1007/s11006-006-0136-1