328 search results - page 10 / 66 » Homomorphism bounded classes of graphs |
EJC
2010
13 years 8 months ago
2010
We prove that for any fixed r 2, the tree-width of graphs not containing Kr as a topological minor (resp. as a subgraph) is bounded by a linear (resp. polynomial) function of the...
ECCC
2006
13 years 8 months ago
2006
Ahlswede and Winter [AW02] introduced a Chernoff bound for matrix-valued random variables, which is a non-trivial generalization of the usual Chernoff bound for real-valued random...
MFCS
2004
Springer
14 years 1 months ago
2004
Springer
Abstract. Bidimensionality provides a tool for developing subexponential fixed-parameter algorithms for combinatorial optimization problems on graph families that exclude a minor....
CORR
2004
Springer
13 years 8 months ago
2004
Springer
We introduce regular graph constraints and explore their decidability properties. The motivation for regular graph constraints is 1) type checking of changing types of objects in ...
CSL
2007
Springer
14 years 2 months ago
2007
Springer
Abstract. Although Cai, F¨urer and Immerman have shown that fixedpoint logic with counting (IFP + C) does not express all polynomialtime properties of finite structures, there h...