From the reviews: "This book presents a detailed exposition of qualitative results for quadratic programming (QP) and affine variational inequalities (AVI). Both topics are developed into a unifying approach." (Walter Gómez Bofill, Zentralblatt MATH, Vol. 1092 (18), 2006) "This book presents a theory of qualitative aspects of nonconvex quadratic programs and affine variational ... Read moreinequalities. … Applications to fractional vector optimization problems and traffic equilibrium problems are discussed, too. The book is a valuable collection of many basic ideas and results for these classes of problems, and it may be recommended to researchers and advanced students not only in the field of optimization, but also in other fields of applied mathematics." (D. Klatte, Mathematical Reviews, Issue 2006 e) "This book presents a qualitative study of nonconvex quadratic programs and affine variational inequalities. … Most of the proofs are presented in a detailed and elementary way. … Whenever possible, the authors give examples illustrating their results. … In summary, this book can be recommended for advanced students in applied mathematics due to the clear and elementary style of presentation. … this book can be serve as an interesting reference for researchers in the field of quadratic programming, finite dimensional variational inequalities and complementarity problems." (M. Stingl, Mathemataical Methods of Operations Research, Vol. 65, 2007) Show Less