List of accepted papers for ESA 2009: Edoardo Amaldi, Claudio Iuliano, Tomasz Jurkiewicz, Kurt Mehlhorn and Romeo Rizzi. Breaking the O(m^2 n) Barrier for Minimum Cycle Basis Eyal Ackerman, Rom Pinchasi, Ludmila Scharf and Marc Scherfenberg. On Inducing Polygons and Related Problems Martin Aum?ller, Martin Dietzfelbinger and Michael Rink. Experimental variations of a theoretically good retrieval data structure Chen Avin, Zvi Lotker and Yvonne Anne Pignolet. On the Power of Uniform Power: Capacity of Wireless Networks with Bounded Resources Yossi Azar, Benjamin Birnbaum, Anna Karlin and Thach Nguyen. On Revenue Maximization in Second-Price Ad Auctions Elliot Anshelevich and Bugra Caskurlu. Exact and Approximate Equilibria for Optimal Group Network Formation Mohammad Ali Abam, Mark de Berg, Mohammad Farshi, Joachim Gudmundsson and Michiel Smid. Geometric Spanners for Weighted Point Sets Therese Biedl and Burkay Genc. Cauchy's theorem for orthogonal polyhedra of genus 0 Markus Blaeser and Christian Hoffmann. Fast Computation of Interlace Polynomials on Graphs of Bounded Treewidth Hans L. Bodlaender, Stephan Thomasse and Anders Yeo. Kernel Bounds for Disjoint Cycles and Disjoint Paths Xiaohui Bei, Wei Chen, Shang-Hua Teng, Jialin Zhang and Jiajie Zhu. Bounded Budget Betweenness Centrality Game for Strategic Network Formations Andreas Bjorklund, Thore Husfeldt, Petteri Kaski and Mikko Koivisto. Counting Paths and Packings in Halves Djamal Belazzougui, Fabiano Botelho and Martin Dietzfelbinger. Hash, displace, and compress Kevin Buchin. Constructing Delaunay Triangulations along Space-Filling Curves Moses Charikar, MohammadTaghi Hajiaghayi and Howard Karloff. Improved Approximation Algorithms for Label Cover Problems Jurek Czyzowicz, Arnaud Labourel and Andrzej Pelc. Optimality and Competitiveness of Exploring Polygons by Mobile Robots George Christodoulou, Elias Koutsoupias and Paul Spirakis. On the performance of approximate equilibria in congestion games Jakub Chaloupka. Parallel Algorithms for Mean-Payoff Games: An Experimental Evaluation Manuel Caroli and Monique Teillaud. Computing 3D Periodic Triangulations Chandra Chekuri, Sungjin Im and Benjamin Moseley. Minimizing Maximum Response Time and Delay Factor in Broadcast Scheduling Adrian Dumitrescu and Minghui Jiang. Piercing translates and homothets of a convex body Gyorgy Dosa and Leah Epstein. Preemptive online scheduling with reordering Atish Das Sarma, Sreenivas Gollapudi and Rina Panigrahy. Sparse Cut Projections in Graph Streams Daniel Delling, Thomas Pajor and Dorothea Wagner. Accelerating Multi-Modal Route Planning by Access-Nodes Erik D. Demaine, MohammadTaghi Hajiaghayi and D?niel Marx. Minimizing Movement: Fixed-Parameter Tractability Claudia D'Ambrosio, Jon Lee and Andreas Waechter. A global-optimization algorithm for mixed-integer nonlinear programs having separable non-convexity Christoph D?rr, Flavio Gui?ez and Mart?n Matamala. Reconstructing 3-colored grids from horizontal and vertical projections is NP-hard Yuval Emek. k-Outerplanar Graphs, Planar Duality, and Low Stretch Spanning Trees Michael Elkin and Shay Solomon. Narrow-Shallow-Low-Light Trees with and without Steiner Points Sebastian Eggert, Lasse Kliemann and Anand Srivastav. Bipartite Graph Matchings in the Semi-Streaming Model Khaled Elbassioni, Kazuhisa Makino and Imran Rauf. Output-Sensitive Algorithms for Enumerating Minimal Transversals for Some Geometric Hypergraphs Johannes Fischer. Short Labels for Lowest Common Ancestors in Trees Fedor Fomin, Petr Golovach and Dimitrios Thilikos. Contraction Bidimensionality: the accurate picture Paolo Ferragina, Igor Nitto and Rossano Venturini. On optimally partitioning a text to improve its compression Rudolf Fleischer, Xi Wu and Liwei Yuan. Experimental study of FPT algorithms for the directed feedback vertex set problem Martin F?rer. E?cient Computation of the Characteristic Polynomial of a Tree and Related Tasks Heidi Gebauer. Disproof of the Neighborhood Conjecture with Implications to SAT Fabrizio Grandoni, Ravi R. and Mohit Singh. Iterative Rounding for Multi-Objective Optimization Problems Sumit Ganguly and Christian Sohler. d-dimensional Knapsack in the Streaming Model Navin Goyal, Neil Olver and Bruce Shepherd. Dynamic vs Oblivious Routing in Network Design Johannes B Hreinsson, Morten Kr?yer and Rasmus Pagh. Storing a Compressed Function with Constant Time Access Toru Hasunuma, Toshimasa Ishii, Hirotaka Ono and Yushi Uno. A linear time algorithm for L(2, 1)-labeling of trees Martin Hoefer and Alexander Skopalik. Altruism in Atomic Congestion Games Rafael Hassin, R Ravi and Fatma Sibel Salman. Tractable Cases of Facility Location on a Network with a Linear Reliability Order of Links Gerold Jaeger, Sharlee Climer and Weixiong Zhang. Complete Parsimony Haplotype Inference Problem and Algorithms Haim Kaplan and Yahav Nussbaum. Maximum Flow in Directed Planar Graphs with Vertex Capacities David Kirkpatrick. Hyperbolic dovetailing Andreas Karrenbauer and Thomas Rothvoss. An Average-Case Analysis for Rate-Monotonic Multiprocessor Real-time Scheduling Maarten L?ffler and Jeff Phillips. Shape Fitting on Point Sets with Probability Distributions Inge Li G?rtz, Viswanath Nagarajan and R Ravi. Minimum Makespan Multi-vehicle Dial-a-Ride Andrzej Lingas. A fast output-sensitive algorithm for Boolean matrix multiplication Ross McConnell and Yahav Nussbaum. Linear-time recognition of probe interval graphs Johan M. M. van Rooij, Hans L. Bodlaender and Peter Rossmanith. Dynamic Programming on Tree Decompositions Using Generalised Fast Subset Convolution Johan M. M. van Rooij, Jesper Nederlof and Thomas C. van Dijk. Inclusion/Exclusion Meets Measure and Conquer: Exact algorithms for counting dominating sets Andrew McGregor, Krzysztof Onak and Rina Panigrahy. The Oil Searching Problem D?niel Marx and Igor Razgon. Constant ratio fixed-parameter approximation of the edge multicut problem Magnus M. Halldorsson. Wireless scheduling with power control Mohammad Mahdian and Grant Wang. Clustering-Based Bidding Languages for Sponsored Search Marcel Ochel and Berthold V?cking. Approximability of OFDMA Scheduling David Pritchard. Approximability of Sparse Integer Programs Alberto Pettarin, Andrea Pietracaprina and Geppino Pucci. On the Expansion and Diameter of Bluetooth-like Topologies Rina Panigrahy and Eric Lehman. 3.5-Way Cuckoo Hashing for the Price of 2 Geevarghese Philip, Venkatesh Raman and Somnath Sikdar. Solving Dominating Set in Larger Classes of Graphs: FPT Algorithms and Polynomial Kernels Juraj Stacho and Michel Habib. Polynomial-time algorithm for the leafage of chordal graphs Siddhartha Sen, Bernhard Haeupler and Robert E. Tarjan. Rank-Pairing Heaps Jing Xiao, Tiancheng Lou and Tao Jiang. An Efficient Algorithm for Haplotype Inference on Pedigrees with a Small Number of Recombinants