The fourth edition of "Linear Programming: Foundations and Extensions" introduces the latest theories and applications in optimization, focusing on constrained optimization. It covers linear programming, convex analysis, network flows, integer programming, quadratic programming, and convex optimization. The book includes practical business and non-business applications, detailed numerical examples, and specific algorithms. It features free C programs for implementing major algorithms and online JAVA applets for illustrating pivot rules and variants of the simplex method. The book is part of the International Series in Operations Research & Management Science and is well-received for its clear presentation and practical content, though some reviewers note its outdated design and layout compared to modern textbooks.The fourth edition of "Linear Programming: Foundations and Extensions" introduces the latest theories and applications in optimization, focusing on constrained optimization. It covers linear programming, convex analysis, network flows, integer programming, quadratic programming, and convex optimization. The book includes practical business and non-business applications, detailed numerical examples, and specific algorithms. It features free C programs for implementing major algorithms and online JAVA applets for illustrating pivot rules and variants of the simplex method. The book is part of the International Series in Operations Research & Management Science and is well-received for its clear presentation and practical content, though some reviewers note its outdated design and layout compared to modern textbooks.