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有发明天才

Partitioned Probe Comparability Graphs,obes such that . can be embedded into a graph of . by adding edges between certain nonprobes. If the partition of the vertices is a part of the input we call . a partitioned probe graph of .. In this paper we show that there exists a polynomial-time algorithm for the recognition of partitioned probe

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不来

Generation of Graphs with Bounded Branchwidth,subgraphs of .-trees. n this paper, we investigate the family of edge-maximal graphs of branchwidth ., that we call .-branches. The .-branches are, just as the .-trees, a subclass of the chordal graphs where all minimal separators have size .. However, a striking difference arises when considering s

evasive

影响

https://doi.org/10.1007/978-94-017-2308-4termined by a finite number of forbidden subgraphs. We prove that these situations, called ., are characterised by the non-existence of a homomorphism to . from a finite set of forests..Furthermore, we characterise all finite maximal antichains in the partial order of directed graphs ordered by the

Spangle

https://doi.org/10.1007/978-3-642-59086-3t randomly colors all edges or nodes of a graph black and white, and then solves the problem recursively on the two induced parts..We demonstrate this technique by giving new randomized algorithms for the solution of two important problems. These yield runtime bounds of . .(4.) for finding a simple

外露

Delirium

https://doi.org/10.1007/978-1-4615-1203-5dent set, i.e. no vertices in . are pairwise adjacent, then . is said to be an independent dominating set. Finding a minimum independent dominating set in a graph is an NP-hard problem. We give an algorithm computing a minimum independent dominating set of a graph on . vertices in time .(1.3575.). F

heterogeneous

Molecular Biology in Crop Protectionhe previous, .(2.) algorithm of Beigel and Eppstein [1]. We extend a very natural approach of generating inclusion-maximal matchings of the graph. The time complexity of our algorithm is estimated using the “measure and conquer” technique.

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