2021
DOI: 10.48550/arxiv.2112.10025
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Improved product structure for graphs on surfaces

Abstract: Dujmović, Joret, Micek, Morin, Ueckerdt and Wood [J. ACM 2020] proved that for every graph G with Euler genus g there is a graph H with treewidth at most 4 and a path P such that G ⊆ H P K max{2g,3} . We improve this result by replacing "4" by "3".

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Cited by 3 publications
(3 citation statements)
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“…They have been the key tool to resolve several open problems regarding queue layouts [15], nonrepetitive colourings [13], centered colourings [11], clustered colourings [14], adjacency labellings [5,12,18], vertex rankings [7], twin-width [6], odd colourings [16], and infinite graphs [23]. Similar product structure theorems are known for other classes including graphs with bounded Euler genus [10,15], apex-minor-free graphs [15], (g, d)-map graphs [17], (g, δ)-string graphs [17], (g, k)-planar graphs [17], powers of planar graphs [17,21], k-semi-fan-planar graphs [21] and k-fan-bundle planar graphs [21].…”
Section: Introductionmentioning
confidence: 88%
“…They have been the key tool to resolve several open problems regarding queue layouts [15], nonrepetitive colourings [13], centered colourings [11], clustered colourings [14], adjacency labellings [5,12,18], vertex rankings [7], twin-width [6], odd colourings [16], and infinite graphs [23]. Similar product structure theorems are known for other classes including graphs with bounded Euler genus [10,15], apex-minor-free graphs [15], (g, d)-map graphs [17], (g, δ)-string graphs [17], (g, k)-planar graphs [17], powers of planar graphs [17,21], k-semi-fan-planar graphs [21] and k-fan-bundle planar graphs [21].…”
Section: Introductionmentioning
confidence: 88%
“…The interested reader is referred to [13][14][15] for extensions of this result to graphs of bounded genus, and other natural generalizations of planar graphs.…”
Section: Subgraphs Of Strong Productsmentioning
confidence: 99%
“…The building blocks typically have bounded treewidth, which is the standard measure of how similar a graph is to a tree. Examples of graphs classes that can be described this way include planar graphs [27,72], graphs of bounded Euler genus [23,27], graphs excluding a fixed minor [27], and various non-minor-closed classes [29,41]. These results have been the key to solving several open problems regarding queue layouts [27], nonrepetitive colouring [26], p-centered colouring [24], adjacency labelling [25,35], and twin-width [3,11].…”
Section: Introductionmentioning
confidence: 99%