Algorithms 4 Clique-transversals 4 ALGORITMOS APROXIMADOS 3 APPROXIMATION ALGORITHMS 3 CLIQUE INDEPENDENT SET 3 CLIQUE TRANSVERSAL SET 3 COMBINATORIAL OPTIMIZATION 3 CONJUNTO CLIQUE INDEPENDIENTE 3 CONJUNTO VECINDAD INDEPENDIENTE 3 INDUCED MATCHING 3 MATCHING INDUCIDO 3 NEIGHBORHOOD COVERING SET 3 NEIGHBORHOOD INDEPENDENT SET 3 OPTIMIZACION COMBINATORIA 3 RECUBRIMIENTO POR VECINDADES CERRADAS 3 TRANSVERSAL DE CLIQUES 3 3K2̄-free circular-arc graphs 2 Adjacent vertices 2 Approximation algorithms 2 Bounded degree graphs 2 Cardinalities 2 Circular-arc graphs 2 Clique transversal 2 Clique-independent sets 2 Clique-perfect graphs 2 Distributed computer systems 2 Graph class 2 Graph classes 2 Graph theory 2 Graphic methods 2