Abstract
We consider the classical problems (Edge) Steiner Tree and Vertex Steiner Tree after restricting the input to some class of graphs characterized by a small set of forbidden induced subgraphs. We show a dichotomy for the former problem restricted to (H1, H2) -free graphs and a dichotomy for the latter problem restricted to H-free graphs. We find that there exists an infinite family of graphs H such that Vertex Steiner Tree is polynomial-time solvable for H-free graphs, whereas there exist only two graphs H for which this holds for Edge Steiner Tree. We also find that Edge Steiner Tree is polynomial-time solvable for (H1, H2) -free graphs if and only if the treewidth of the class of (H1, H2) -free graphs is bounded (subject to P≠ NP). To obtain the latter result, we determine all pairs (H1, H2) for which the class of (H1, H2) -free graphs has bounded treewidth.
Original language | English |
---|---|
Title of host publication | LATIN 2020 |
Subtitle of host publication | Theoretical Informatics - 14th Latin American Symposium 2021, Proceedings |
Editors | Yoshiharu Kohayakawa, Flávio Keidi Miyazawa |
Publisher | Springer |
Pages | 613-624 |
Number of pages | 12 |
ISBN (Print) | 9783030617912 |
DOIs | |
Publication status | Published - 2020 |
Event | 14th Latin American Symposium on Theoretical Informatics, LATIN 2020 - Sao Paulo, Brazil Duration: 5 Jan 2021 → 8 Jan 2021 |
Publication series
Name | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
---|---|
Volume | 12118 LNCS |
ISSN (Print) | 0302-9743 |
ISSN (Electronic) | 1611-3349 |
Conference
Conference | 14th Latin American Symposium on Theoretical Informatics, LATIN 2020 |
---|---|
Country/Territory | Brazil |
City | Sao Paulo |
Period | 5/01/21 → 8/01/21 |
Bibliographical note
Funding Information:Supported by the Leverhulme Trust (RPG-2016-258) and the Royal (IES\R1\191223).
Publisher Copyright:
© 2020, Springer Nature Switzerland AG.
Funding
Supported by the Leverhulme Trust (RPG-2016-258) and the Royal (IES\R1\191223).