Mixed-Integer Cuts from Cyclic Groups -- Optimizing over the First Chvàtal Closure -- Sequential Pairing of Mixed Integer Inequalities -- Approximate Min-max Relations for Odd Cycles in Planar Graphs -- Disjoint Cycles: Integrality Gap, Hardness, and Approximation -- A Combinatorial Algorithm to Find a Maximum Even Factor -- Improved Approximation Schemes for Linear Programming Relaxations of Combinatorial Optimization Problems -- On the Approximability of the Minimum Congestion Unsplittable Shortest Path Routing Problem -- Inventory and Facility Location Models with Market Selection -- On Approximating Complex Quadratic Optimization Problems via Semidefinite Programming Relaxations -- Semidefinite Bounds for the Stability Number of a Graph via Sums of Squares of Polynomials -- Approximation Algorithms for Semidefinite Packing Problems with Applications to Maxcut and Graph Coloring -- On the Inefficiency of Equilibria in Congestion Games -- Unrelated Parallel Machine Scheduling with Resource Dependent Processing Times -- LP-Based Online Scheduling: From Single to Parallel Machines -- Unique Sink Orientations of Grids -- Jumping Doesn't Help in Abstract Cubes -- Computing the Inertia from Sign Patterns -- Randomized Relaxation Methods for the Maximum Feasible Subsystem Problem -- On Clique Separators, Nearly Chordal Graphs, and the Maximum Weight Stable Set Problem -- Smoothed Analysis of Integer Programming -- Circular Ones Matrices and the Stable Set Polytope of Quasi-Line Graphs -- Approximation Algorithms for Stochastic Inventory Control Models -- On Two-Stage Stochastic Minimum Spanning Trees -- Combinatorial Analysis of Generic Matrix Pencils -- Power Optimization for Connectivity Problems -- Packing Steiner Forests -- Bidimensional Packing by Bilinear Programming -- On the L ???-Norm of Extreme Points for Crossing Supermodular Directed Network LPs -- Virtual Private Network Design: A Proof of the Tree Routing Conjecture on Ring Networks -- Approximation Algorithms for the Minimum Cardinality Two-Connected Spanning Subgraph Problem -- Using Grammars to Generate Very Large Scale Neighborhoods for the Traveling Salesman Problem and Other Sequencing Problems -- A Study of Domino-Parity and k-Parity Constraints for the TSP -- Not Every GTSP Facet Induces an STSP Facet.