281 search results - page 15 / 57 » The Complexity of Planar Counting Problems |
STOC
2006
ACM
14 years 8 months ago
2006
ACM
Let > 0 be a constant. For any edge-weighted planar graph G and a subset S of nodes of G, there is a subgraph H of G of weight a constant times that of the minimum Steiner tree...
COMPGEOM
2001
ACM
13 years 11 months ago
2001
ACM
We present two approaches to the problem of calculating a cell in a 3-dimensional arrangement of quadrics. The first approach solves the problem using rational arithmetic. It work...
IPL
2006
13 years 7 months ago
2006
We show that computing the lexicographically first four-coloring for planar graphs is p 2hard. This result optimally improves upon a result of Khuller and Vazirani who prove this ...
ESA
2004
Springer
14 years 1 months ago
2004
Springer
We show the first o(n2 ) algorithm for coloring vertices of trianglefree planar graphs using three colors. The time complexity of the algorithm is O(n log n). Our approach can be ...
CORR
2008
Springer
13 years 7 months ago
2008
Springer
The behavior of some stochastic chemical reaction networks is largely unaffected by slight inaccuracies in reaction rates. We formalize the robustness of state probabilities to re...