31 search results - page 3 / 7 » Degree-constrained orientations of embedded graphs |
155
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COMBINATORICS
2002
15 years 6 months ago
2002
Suppose G is r-colorable and P V (G) is such that the components of G[P] are far apart. We show that any (r + s)-coloring of G[P] in which each component is s-colored extends to ...
200
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CCCG
2009
15 years 7 months ago
2009
In this paper we study the problem of computing an upward straight-line embedding of a directed graph G into a point set S, i.e. a planar drawing of G such that each vertex is map...
147
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COMPGEOM
2003
ACM
15 years 11 months ago
2003
ACM
Pointed pseudo-triangulations are planar minimally rigid graphs embedded in the plane with pointed vertices (adjacent to an angle larger than π). In this paper we prove that the ...
156
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COMPGEOM
2010
ACM
15 years 11 months ago
2010
ACM
Let G be an unweighted graph of complexity n cellularly embedded in a surface (orientable or not) of genus g. We describe improved algorithms to compute (the length of) a shortest...
174
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STACS
2009
Springer
16 years 1 months ago
2009
Springer
We present the first polynomial-time approximation schemes (PTASes) for the following subset-connectivity problems in edge-weighted graphs of bounded genus: Steiner tree, low-conn...