17th International Workshop, WG '91, Fischbachau, Germany, June 17-19, 1991, Proceedings

Approximating treewidth, pathwidth, and minimum elimination tree height.- Monadic second-order evaluations on tree-decomposable graphs.- Optimal embedding of complete binary trees into lines and grids.- Graph rewriting systems and their application to network reliability analysis.- Nondeterministic control structures for graph rewriting systems.- A language for generic graph-transformations.- Attributed elementary programmed graph grammars.- The complexity of approximating the class Steiner tree problem.- On complexity of some chain and antichain partition problems.- Tight bounds for the rectangular art gallery problem.- Voronoi diagrams of moving points in the plane.- Using maximal independent sets to solve problems in parallel.- Fast parallel algorithms for coloring random graphs.- Optimal vertex ordering of a graph and its application to symmetry detection.- Edge separators for graphs of bounded genus with applications.- Line digraph iterations and the spread concept-with application to graph theory, fault tolerance, and routing.- A generalized encryption scheme based on random graphs.- Dynamic algorithms for shortest paths in planar graphs.- Complete problems for logspace involving lexicographic first paths in graphs.- A new upper bound on the complexity of the all pairs shortest path problem.- On the crossing number of the hypercube and the cube connected cycles.- Logic arrays for interval indicator functions.- On the broadcast time of the butterfly network.- On disjoint cycles.- Short disjoint cycles in cubic bridgeless graphs.