Algorithms - ESA 2009This volume contains the papers presented at ESA 2009: The 17th Annual ropean Symposium on Algorithms, September 79, 2009. ESA has been held annually since 1993, and seeks to cover both theoretical and engineering aspects of algorithms. The authors were asked to classify their paper under one or more categories as described in Fig. 1. Since 2001, ESA has been the core of the larger ALGO conference, which typically includes several satellite