Titlebook: Automata, Languages and Programming; 30th International C Jos C. M. Baeten,Jan Karel Lenstra,Gerhard J. Woeg Conference proceedings 2003 Sp

矛盾心理

On the Axiomatizability of Ready Traces, Ready Simulation, and Failure Traceshabet of actions is finite, then there exists a (sound and complete) finite equational axiomatization for the process algebra BCCSP modulo ready trace semantics. We prove that if the alphabet is infinite, then such an axiomatization does not exist. Furthermore, we present finite equational axiomatiz

存心

Spongy-Bone

奇思怪想

inculpate

An Improved Approximation Algorithm for the Asymmetric TSP with Strengthened Triangle Inequality .(.) ≤ . · (.(.) + .(.)) for all nodes .. Chandran and Ram [.] recently gave the first constant factor approximation algorithm with polynomial running time for this problem. They achieve performance ratio ./1−.. We devise an approximation algorithm with performance ratio ., which is better than the

Needlework

愤世嫉俗者

Approximation Schemes for Degree-Restricted MST and Red-Blue Separation Problemfor approximating TSP. Given . points in the plane, . = 2 or 3, and . > 0, the scheme finds an approximation with cost within 1 + . of the lowest cost spanning tree with the property that all nodes have degree at most .. We also develop a polynomial time approximation scheme for the Euclidean versio

储备

Approximating Steiner ,-Cutsrected graph . = (.), a subset of vertices ... called ., and an integer . ≤ |.|, the objective is to find a minimum weight set of edges whose removal results in . disconnected components, each of which contains at least one terminal. We give two approximation algorithms for the problem: a 2 − 2/.-ap

间谍活动

唤起

Approximation Algorithm for Directed Telephone Multicast Problemdiscrete “rounds”, and in every round every processor is allowed to pick one of its neighbors, and to send him a message. The . problem requires to compute a schedule with minimal number of rounds that delivers a message from a given single processor, that generates the message, to all the processor