Abstract
A coloring of the vertex set in a graph is called perfect if all its identically colored vertices have identical multisets of colors of their neighbors. Refer as the infinite circulant graph with continuous set of n distances to the Cayley graph of the group ℤ with generator set {1, 2,..., n}. We obtain a description of all perfect colorings with an arbitrary number of colors of this graph with distances 1 and 2. In 2015, there was made a conjecture characterizing perfect colorings for the infinite circulant graphs with a continuous set of n distances. The obtained result confirms the conjecture for n = 2. The problem is still open in the case of n > 2.
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Original Russian Text © M.A. Lisitsyna, O.G. Parshina, 2017, published in Diskretnyi Analiz i Issledovanie Operatsii, 2017, Vol. 24, No. 3, pp. 20–34.
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Lisitsyna, M.A., Parshina, O.G. Perfect colorings of the infinite circulant graph with distances 1 and 2. J. Appl. Ind. Math. 11, 381–388 (2017). https://doi.org/10.1134/S1990478917030097
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DOI: https://doi.org/10.1134/S1990478917030097