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» Convexifying Monotone Polygons
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ALGORITHMICA
1998
143views more  ALGORITHMICA 1998»
13 years 5 months ago
On Minimum-Area Hulls
Abstract. We study some minimum-area hull problems that generalize the notion of convex hull to starshaped and monotone hulls. Specifically, we consider the minimum-area star-shap...
Esther M. Arkin, Yi-Jen Chiang, Martin Held, Josep...
CCCG
2006
13 years 7 months ago
Rotationally Monotone Polygons
We introduce a generalization of monotonicity. An n-vertex polygon P is rotationally monotone with respect to a point r if there exists a partitioning of the boundary of P into ex...
Prosenjit Bose, Pat Morin, Michiel H. M. Smid, Ste...
CCCG
2006
13 years 7 months ago
Computing the Tool Path of an Externally Monotone Polygon in Linear Time
Prosenjit Bose, David Bremner, Diane L. Souvaine
CCCG
2009
13 years 4 months ago
Wireless Localization with Vertex Guards is NP-hard
We consider a special class of art gallery problems inspired by wireless localization. Given a simple polygon P, place and orient guards each of which broadcasts a unique key with...
Tobias Christ, Michael Hoffmann
MOC
1998
144views more  MOC 1998»
13 years 5 months ago
Convergence of a random walk method for a partial differential equation
Abstract. A Cauchy problem for a one–dimensional diffusion–reaction equation is solved on a grid by a random walk method, in which the diffusion part is solved by random walk...
Weidong Lu