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The Variational Inequality Problem Chapter | 3 43


                           Setting

                                        3
                                                                               R
                                 (∀x ∈ R ) :  (x) =   R +  (x 1 ) +   R +  (x 2 ) +   R + (x 3 ) =   3 (x),
                                                                                +
                           we obtain the variational inequality model VI( , ,q):
                                       3                                     3
                                  z ∈ R : 
z + q,v − z +  (v) −  (z) ≥ 0, ∀v ∈ R .    (3.14)
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