Abstract
We introduce and study two kinds of morphisms between ball's structures related to groups and graphs.
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REFERENCES
I. V. Protasov, “Combinatorial size of subsets of groups and graphs,” in: Algebraic Structures and Their Applications [in Russian], Institute of Mathematics, Ukrainian Academy of Sciences, Kiev (2002), pp. 76–85.
M. Gromov, “Groups of polynomial growth and expanding maps,” Publ. Math. Inst. Haut. Etud. Sant., 53, 53–73 (1981).
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Protasov, I.V. Morphisms of Ball's Structures of Groups and Graphs. Ukrainian Mathematical Journal 54, 1027–1037 (2002). https://doi.org/10.1023/A:1021772505988
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DOI: https://doi.org/10.1023/A:1021772505988