Positive Fixed Points of Cubic Operators on R² and Gibbs Measures
Yusup Kh. EshkabilovKarshi State UniversityShohruh Dilmurodovich NodirovKarshi State University
ABI
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One model with nearest neighbour interactions of spins with values from the set [0; 1] on the Cayley tree of order three is considered in the paper. Translation-invariant Gibbs measures for the model are studied. Results are proved by using properties of the positive fixed points of a cubic operator in the cone R²₊
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