From the reviews: "J. Jahn, well known by his papers and books on convex analysis and optimization a? wrote this interesting book that gives a clear insight into theory and application of vector optimization. It is not only a revised version of the book from 1986 a? but he also extended the contents considerably a? ." (Alfred G??pfert, Zentralblatt MATH, Vol. 1055, 2005) "This volume is a revised and substantially enlarged version of the authora??s book a? . This excellent book will be very useful as an introduction to vector optimization and will also constitute a valuable reference for researchers. It will undoubtedly become a? a classical reference in the field." (Juan-Enrique Martinez-Legaz, Mathematical Reviews, 2005c).