Algorithms and Discrete Applied Mathematics

<p>Obstruction Characterizations in Graphs and Digraphs.- Approximation Algorithms.- A PTAS for the Metric Case of the Minimum Sum-Requirement Communication Spanning Tree Problem.- Constant Approximation for Broadcasting in k-cycle Graph.- Computational Geometry.- Three paths to point placement.- Vertex Guarding in Weak Visibility Polygons.- On Collections of Polygons Cuttable with a Segment Saw.- Rectilinear path problems in the presences of rectangular obstacles.- Computational Complexity.- Parameterized Analogues of Probabilistic Computation.- Algebraic Expressions of Rhomboidal Graphs.- Solving Hamiltonian Cycle by an EPT Algorithm for a Non-sparse Parameter.- Graph Theory. New Polynomial Case for Efficient Domination in P 6-free Graphs.- Higher-Order Triangular-Distance Delaunay Graphs: Graph-Theoretical Properties.- Separator Theorems for Interval Graphs and Proper Interval Graphs.- Bounds for the b-Chromatic Number of Induced Subgraphs and G e.- New Characterizations Of Proper Interval Bigraphs and Proper Circular Arc Bigraphs.- On Spectra of Corona Graphs.- Axiomatic Characterization of the Median and Antimedian Functions on Cocktail-Party Graphs and Complete Graphs.- Tree Path Labeling of Hypergraphs A Generalization of the Consecutive Ones Property.- On a special class of boxicity 2 graph.- Algorithms.- Associativity for Binary Parallel Processes: a Quantitative Study.- A Tight Bound for Congestion of an Embedding.-Auction/Belief propagation algorithms for constrained assignment problem.- Domination in some subclasses of bipartite graphs.- Bi-directional Search for Skyline Probability.- Cumulative vehicle routing problem: a column generation approach.- Energy Efficient Sweep Coverage with Mobile and Static Sensors.- Generation of Random Digital Curves using Combinatorial Techniques. </p>