Structure theorem and isomorphism test for graphs with excluded topological subgraphs
Structure theorem and isomorphism test for graphs with excluded topological subgraphs
复制标题
排除拓扑子图的图的结构定理和同构检验
DOI:
10.1145/2213977.2213996
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
D. Marx
中科院分区:
文献类型:
--
作者:
M. Grohe;D. Marx
We generalize the structure theorem of Robertson and Seymour for graphs excluding a fixed graph H as a minor to graphs excluding H as a topological subgraph. We prove that for a fixed H, every graph excluding H as a topological subgraph has a tree decomposition where each part is either "almost embeddable" to a fixed surface or has bounded degree with the exception of a bounded number of vertices. Furthermore, such a decomposition is computable by an algorithm that is fixed-parameter tractable with parameter |H|.We present two algorithmic applications of our structure theorem. To illustrate the mechanics of a "typical" application of the structure theorem, we show that on graphs excluding H as a topological subgraph, Partial Dominating Set (find k vertices whose closed neighborhood has maximum size) can be solved in time f(H,k) • nO(1)time. More significantly, we show that on graphs excluding H as a topological subgraph, Graph Isomorphism can be solved in time nf(H). This result unifies and generalizes two previously known important polynomial-time solvable cases of Graph Isomorphism: bounded-degree graphs and H-minor free graphs. The proof of this result needs a generalization of our structure theorem to the context of invariant treelike decomposition.
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DOI:
--
发表时间:
2010
期刊:
42nd ACM Symposium on Theory of Computing (STOC'10)
影响因子:
--
作者:
K.Kawarabayashi;P.Wollan
通讯作者:
P.Wollan
DOI:
--
发表时间:
2003
期刊:
J. Comb. Theory B
影响因子:
--
作者:
N. Robertson;P. Seymour
通讯作者:
P. Seymour
DOI:
--
发表时间:
2006
期刊:
ACM Symposium on Theory of Computing (STOC' 06) 38
影响因子:
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作者:
K.Kawarabayashi;B.Mohar
通讯作者:
B.Mohar
DOI:
10.1109/lics.2008.10
发表时间:
2008
期刊:
2008 23rd Annual IEEE Symposium on Logic in Computer Science
影响因子:
--
作者:
Martin Grohe
通讯作者:
Martin Grohe
影响因子:
--
作者:
G. Miller
通讯作者:
G. Miller