Competition between two- and three-sublattice ordering for S=1 spins on the square lattice

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, where

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b \in \Z^m

l,u \in \Z^n

, and

f: \Z^n \rightarrow \Z

is a separable convex objective function. The problem o ...

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Competition between two- and three-sublattice ordering for S=1 spins on the square lattice

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