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COMBINATORICS
2004
93views more  COMBINATORICS 2004»
13 years 5 months ago
On the Combinatorial Structure of Arrangements of Oriented Pseudocircles
We introduce intersection schemes (a generalization of uniform oriented matroids of rank 3) to describe the combinatorial properties of arrangements of pseudocircles in the plane ...
Johann Linhart, Ronald Ortner
FOCS
2002
IEEE
13 years 10 months ago
The Partition Technique for Overlays of Envelopes
We obtain a near-tight bound of O(n3+ε ), for any ε > 0, on the complexity of the overlay of the minimization diagrams of two collections of surfaces in four dimensions. This...
Vladlen Koltun, Micha Sharir
WLP
2005
Springer
13 years 11 months ago
Expressing Interaction in Combinatorial Auction through Social Integrity Constraints
Abstract. Combinatorial Auctions are an attractive application of intelligent agents; their applications are countless and are shown to provide good revenues. On the other hand, on...
Marco Alberti, Federico Chesani, Alessio Guerri, M...
DCG
2010
88views more  DCG 2010»
13 years 5 months ago
Computing the Shortest Essential Cycle
An essential cycle on a surface is a simple cycle that cannot be continuously deformed to a point or a single boundary. We describe algorithms to compute the shortest essential cy...
Jeff Erickson, Pratik Worah