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» On Shadows Of Intersecting Families
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JGT
2008
107views more  JGT 2008»
13 years 9 months ago
On planar intersection graphs with forbidden subgraphs
Let C be a family of n compact connected sets in the plane, whose intersection graph G(C) has no complete bipartite subgraph with k vertices in each of its classes. Then G(C) has ...
János Pach, Micha Sharir
VISUALIZATION
2005
IEEE
14 years 3 months ago
Visualizing intersecting surfaces with nested-surface techniques
This paper describes the adaptation and evaluation of existing nestedsurface visualization techniques for the problem of displaying intersecting surfaces. For this work, we collab...
Chris Weigle, Russell M. Taylor II
CCCG
1998
13 years 11 months ago
On point covers of c-oriented polygons
Let S be any family of n c-oriented polygons of the two-dimensional Euclidean plane E2 , i.e., bounded intersection of halfplanes whose normal directions of edges belong to a
Frank Nielsen
EJC
2008
13 years 10 months ago
On triangle-free distance-regular graphs with an eigenvalue multiplicity equal to the valency
Let be a triangle-free distance-regular graph with diameter d 3, valency k 3 and intersection number a2 = 0. Assume has an eigenvalue with multiplicity k. We show that if for ...
Kris Coolsaet, Aleksandar Jurisic, Jack H. Koolen
CORR
2008
Springer
92views Education» more  CORR 2008»
13 years 10 months ago
On sign conditions over real multivariate polynomials
We present a new probabilistic algorithm to find a finite set of points intersecting the closure of each connected component of the realization of every sign condition over a fami...
Gabriela Jeronimo, Daniel Perrucci, Juan Sabia