Selected Research Topics

• Mixed-Integer Programming: Lift-and-Project
• Disjunctive Programming
• Projections Methods in Discrete Optimization
• Branch and Price
• Perfect, Ideal and Balanced Matrices
• The Structure of Scheduling Polyhedra
• Traveling Salesman and Related Problems
• Approximation Algorithms
• Network Design
• Computational Molecular Biology
• Connections with Artificial Intelligence
• Logical Inference
• New Version of the Simplex Method
• Combinatorial Optimization with Parallel Computers
• Cultural Factors