Pudendal-Nerve 发表于 2025-3-26 21:24:18
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https://doi.org/10.1007/978-3-476-04307-8hs over .(2). We propose here algebraic operations on graphs that characterize rank-width. For algorithmic purposes, it is important to represent graphs by balanced terms. We give a unique theorem that generalizes several “balancing theorems” for tree-width and clique-width. New results are obtainedDNR215 发表于 2025-3-27 14:03:14
https://doi.org/10.1007/978-3-658-40933-3(1.) the .-power graph of a tree has NLC-width at most . + 2 and clique-width at most ., (2.) the .-leaf-power graph of a tree has NLC-width at most . and clique-width at most ., and (3.) the .-power graph of a graph of tree-width . has NLC-width at most (. + 1).− 1 and clique-width at most 2·(. + 1Panther 发表于 2025-3-27 21:35:19
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Markus Mangiapane,Roman P. Büchler., graphs that are both comparability and cocomparability graphs, it is known that minimal triangulations are interval graphs. We (negatively) answer the question whether every interval graph is a minimal triangulation of a permutation graph. We give a non-trivial characterisation of the class of inNeedlework 发表于 2025-3-28 03:24:24
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https://doi.org/10.1007/978-3-662-08810-4planar drawings of planar graphs can be realized in .(..) area . In this paper we consider families of DAGs that naturally arise in practice, like DAGs whose underlying graph is a tree (.), is a bipartite graph (.), or is an outerplanar graph (.). Concerning ., we show that optimal .(. log.) area