On the 12-Representability of Induced Subgraphs of a Grid Graph

The notion of a 12-representable graph was introduced by Jones, Kitaev, Pyatkin and Remmel in [Representing graphs via pattern avoiding words, Electron. J. Combin. 22 (2015) #P2.53]. This notion generalizes the notions of the much studied permutation graphs and co-interval graphs. It is known that a...

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Main Authors: Chen Joanna N., Kitaev Sergey
Format: Article
Language:English
Published: University of Zielona Góra 2022-05-01
Series:Discussiones Mathematicae Graph Theory
Subjects:
Online Access:https://doi.org/10.7151/dmgt.2263
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author Chen Joanna N.
Kitaev Sergey
author_facet Chen Joanna N.
Kitaev Sergey
author_sort Chen Joanna N.
collection DOAJ
description The notion of a 12-representable graph was introduced by Jones, Kitaev, Pyatkin and Remmel in [Representing graphs via pattern avoiding words, Electron. J. Combin. 22 (2015) #P2.53]. This notion generalizes the notions of the much studied permutation graphs and co-interval graphs. It is known that any 12-representable graph is a comparability graph, and also that a tree is 12-representable if and only if it is a double caterpillar. Moreover, Jones et al. initiated the study of 12- representability of induced subgraphs of a grid graph, and asked whether it is possible to characterize such graphs. This question of Jones et al. is meant to be about induced subgraphs of a grid graph that consist of squares, which we call square grid graphs. However, an induced subgraph in a grid graph does not have to contain entire squares, and we call such graphs line grid graphs.
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spelling doaj.art-e73562d6dcfa40bcb1fce1d99c77171e2023-08-02T08:59:13ZengUniversity of Zielona GóraDiscussiones Mathematicae Graph Theory2083-58922022-05-0142238340310.7151/dmgt.2263On the 12-Representability of Induced Subgraphs of a Grid GraphChen Joanna N.0Kitaev Sergey1College of Science, Tianjin University of Technology, Tianjin300384, P.R.ChinaDepartment of Mathematics and Statistics, University of Strathclyde, Glasgow, UKThe notion of a 12-representable graph was introduced by Jones, Kitaev, Pyatkin and Remmel in [Representing graphs via pattern avoiding words, Electron. J. Combin. 22 (2015) #P2.53]. This notion generalizes the notions of the much studied permutation graphs and co-interval graphs. It is known that any 12-representable graph is a comparability graph, and also that a tree is 12-representable if and only if it is a double caterpillar. Moreover, Jones et al. initiated the study of 12- representability of induced subgraphs of a grid graph, and asked whether it is possible to characterize such graphs. This question of Jones et al. is meant to be about induced subgraphs of a grid graph that consist of squares, which we call square grid graphs. However, an induced subgraph in a grid graph does not have to contain entire squares, and we call such graphs line grid graphs.https://doi.org/10.7151/dmgt.2263graph representation12-representable graphgrid graphforbidden subgraphsquare grid graphline grid graph05c7505c62
spellingShingle Chen Joanna N.
Kitaev Sergey
On the 12-Representability of Induced Subgraphs of a Grid Graph
Discussiones Mathematicae Graph Theory
graph representation
12-representable graph
grid graph
forbidden subgraph
square grid graph
line grid graph
05c75
05c62
title On the 12-Representability of Induced Subgraphs of a Grid Graph
title_full On the 12-Representability of Induced Subgraphs of a Grid Graph
title_fullStr On the 12-Representability of Induced Subgraphs of a Grid Graph
title_full_unstemmed On the 12-Representability of Induced Subgraphs of a Grid Graph
title_short On the 12-Representability of Induced Subgraphs of a Grid Graph
title_sort on the 12 representability of induced subgraphs of a grid graph
topic graph representation
12-representable graph
grid graph
forbidden subgraph
square grid graph
line grid graph
05c75
05c62
url https://doi.org/10.7151/dmgt.2263
work_keys_str_mv AT chenjoannan onthe12representabilityofinducedsubgraphsofagridgraph
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