Abstract
We prove that the nonempty tolerable solution set of the interval linear system Ax = b is unbounded if and only if the interval matrix of the system has linearly dependent degenerate columns. Also, we prove that the tolerable solution set may be represented as a sum of the linear subspace {c ε ℝn ∨ Ac = 0} and a bounded convex polyhedron and propose a way for suitable estimation of unbounded tolerable solution sets.
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Sharaya, I.A. On Unbounded Tolerable Solution Sets. Reliable Comput 11, 425–432 (2005). https://doi.org/10.1007/s11155-005-0049-9
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DOI: https://doi.org/10.1007/s11155-005-0049-9