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» On the combinatorics of Galois numbers
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COMBINATORICS
1998
89views more  COMBINATORICS 1998»
14 years 11 months ago
Venn Diagrams with Few Vertices
An n-Venn diagram is a collection of n finitely-intersecting simple closed curves in the plane, such that each of the 2n sets X1 ∩X2 ∩· · ·∩Xn, where each Xi is the open...
Bette Bultena, Frank Ruskey
COMBINATORICS
1999
90views more  COMBINATORICS 1999»
14 years 11 months ago
On the Theory of Pfaffian Orientations. II. T-joins, k-cuts, and Duality of Enumeration
This is a continuation of our paper "A Theory of Pfaffian Orientations I: Perfect Matchings and Permanents". We present a new combinatorial way to compute the generating...
Anna Galluccio, Martin Loebl
COCOON
2009
Springer
15 years 6 months ago
Sublinear-Time Algorithms for Tournament Graphs
We show that a random walk on a tournament on n vertices finds either a sink or a 3-cycle in expected time O √ n · log n · log∗ n , that is, sublinear both in the size of th...
Stefan S. Dantchev, Tom Friedetzky, Lars Nagel
CPM
1999
Springer
93views Combinatorics» more  CPM 1999»
15 years 4 months ago
Pattern Matching in Text Compressed by Using Antidictionaries
In this paper we focus on the problem of compressed pattern matching for the text compression using antidictionaries, which is a new compression scheme proposed recently by Crochem...
Yusuke Shibata, Masayuki Takeda, Ayumi Shinohara, ...
COCOON
2007
Springer
15 years 3 months ago
An Improved Algorithm for Online Unit Clustering
Abstract. We revisit the online unit clustering problem in one dimension which we recently introduced at WAOA'06: given a sequence of n points on the line, the objective is to...
Hamid Zarrabi-Zadeh, Timothy M. Chan