347 search results - page 8 / 70 » Schaefer's theorem for graphs |
STOC
2004
ACM
15 years 9 months ago
2004
ACM
We establish several approximate max-integral-flow / minmulticut theorems. While in general this ratio can be very large, we prove strong approximation ratios in the case where th...
113
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FOCS
2005
IEEE
15 years 3 months ago
2005
IEEE
At the core of the seminal Graph Minor Theory of Robertson and Seymour is a powerful structural theorem capturing the structure of graphs excluding a fixed minor. This result is ...
DAM
2007
14 years 9 months ago
2007
In this paper, a structural theorem about toroidal graphs is given that strengthens a result of Borodin on plane graphs. As a consequence, it is proved that every toroidal graph w...
COMBINATORICS
2007
14 years 9 months ago
2007
In this note we present a short proof of the following result, which is a slight extension of a nice 2005 theorem by Kano and Yu. Let e be an edge of an rregular graph G. If G has...
ENTCS
2011
14 years 4 months ago
2011
d abstract) Andr´e Joyal 1 D´epartement des math´ematiques Universit´e du Qu´ebec `a Montr´eal Canada Joachim Kock 2 3 Departament de matem`atiques Universitat Aut`onoma de B...