Entropy Functions on Two-Dimensional Faces of Polymatroidal Region of Degree Four

05/10/2023

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by   Shaocheng Liu, et al.

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In this paper, we characterize entropy functions on the 2-dimensional faces of the polymatroidal region Γ_4. We enumerate all 59 types of 2-dimensional faces of Γ_4 and fully characterized entropy functions on 27 types of them, among which 4 types are non-trivial.