a) Corres pondi ng a uthor: a ni l ra j.s udha ka r@ vs b.cz Abs tra ct. The pape r fo cuses o n the co mpa rison of sequen tial sol ve rs used fo r sol vin g q uad ra tic p rogra mmin g p ro blems whi ch ha ve a wide va rie ty o f appli catio ns in cludin g co n tact mo deling. The com ple x algeb rai c fo rmula tion gene ra ted fro m the con ta ct p roblems ma y be red u ced to simple quad ra ti c p ro gram ming p ro blem using diffe ren t do main de co mp osition me thods an d can be effe

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... vel y sol ved usin g di ffe ren t sol ve rs . Su ch sol ve rs a re ap plied on ben chma rk p roblems an d the a chie ved resul ts a re co m p a red .