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Some global uniqueness and solvability results for linear complementarity problems over symmetric cones. (English) Zbl 1153.90019
Summary: This article deals with linear complementarity problems over symmetric cones. Our objective here is to characterize global uniqueness and solvability properties for linear transformations that leave the symmetric cone invariant. Specifically, we show that, for algebra automorphisms on the Lorentz space $\cal{L}^n$ and for quadratic representations on any Euclidean Jordan algebra, global uniqueness, global solvability, and the $\bbfR_0$-properties are equivalent. We also show that for Lyapunov-like transformations, the global uniqueness property is equivalent to the transformation being positive stable and positive semidefinite.

90C33Complementarity and equilibrium problems; variational inequalities (finite dimensions)
17C55Finite dimensional structures
15B48Positive matrices and their generalizations; cones of matrices
15B57Hermitian, skew-Hermitian, and related matrices
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