For the λ-model on a Cayley tree of order k ≥ 2, we describe the set of periodic and weakly periodic ground states corresponding to normal divisors of index 2 of the group representation of Cayley tree.
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Translated from Ukrains’kyi Matematychnyi Zhurnal, Vol. 72, No. 5, pp. 667–678, May, 2020.
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Mukhamedov, F.M., Rakhmatullaev, M.M. & Rasulova, M.A. Weakly Periodic Ground States for the λ-Model. Ukr Math J 72, 771–784 (2020). https://doi.org/10.1007/s11253-020-01826-6
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DOI: https://doi.org/10.1007/s11253-020-01826-6