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IPL
2006
72views more  IPL 2006»
14 years 10 months ago
Structure and linear time recognition of 3-leaf powers
A graph G is the k-leaf power of a tree T if its vertices are leaves of T such that two vertices are adjacent in G if and only if their distance in T is at most k. Then T is the k...
Andreas Brandstädt, Van Bang Le
IPL
2006
76views more  IPL 2006»
14 years 10 months ago
Fraction interpolation walking a Farey tree
We present an algorithm to find a proper fraction in simplest reduced terms between two reduced proper fractions. A proper fraction is a rational number m/n with
Marc Mosko, J. J. Garcia-Luna-Aceves
IPL
2006
114views more  IPL 2006»
14 years 10 months ago
Quantum lower bounds for the Goldreich-Levin problem
At the heart of the Goldreich-Levin Theorem is the problem of determining an n-bit string a by making queries to two oracles, referred to as IP (inner product) and EQ (equivalence...
Mark Adcock, Richard Cleve, Kazuo Iwama, Raymond H...
IPL
2000
82views more  IPL 2000»
14 years 9 months ago
Estimating the number of vertices of a polyhedron
Given a polyhedron P by a list of inequalities we develop unbiased estimates of the number of vertices and bases of P. The estimates are based on applying tree estimation methods ...
David Avis, Luc Devroye
IPL
2000
105views more  IPL 2000»
14 years 9 months ago
Coverings that preserve sense of direction
Sense of direction is a property of labelled networks (i.e., arc-coloured graphs) that allows one to assign coherently local identifiers to other processors on the basis of the ro...
Paolo Boldi, Sebastiano Vigna