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SODA
2012
ACM
205views Algorithms» more  SODA 2012»
11 years 7 months ago
Approximate duality of multicommodity multiroute flows and cuts: single source case
Given an integer h, a graph G = (V, E) with arbitrary positive edge capacities and k pairs of vertices (s1, t1), (s2, t2), . . . , (sk, tk), called terminals, an h-route cut is a ...
Petr Kolman, Christian Scheideler
ICALP
2011
Springer
12 years 8 months ago
On Tree-Constrained Matchings and Generalizations
We consider the following Tree-Constrained Bipartite Matching problem: Given two rooted trees T1 = (V1, E1), T2 = (V2, E2) and a weight function w : V1 × V2 → R+, find a maximu...
Stefan Canzar, Khaled M. Elbassioni, Gunnar W. Kla...
ECCC
2011
217views ECommerce» more  ECCC 2011»
12 years 8 months ago
ReachFewL = ReachUL
We show that two complexity classes introduced about two decades ago are equal. ReachUL is the class of problems decided by nondeterministic log-space machines which on every inpu...
Brady Garvin, Derrick Stolee, Raghunath Tewari, N....
DCG
1999
89views more  DCG 1999»
13 years 4 months ago
On Flag Vectors, the Dowling Lattice, and Braid Arrangements
Westudycomplexhyperplanearrangementswhoseintersectionlattices,known as the Dowling lattices, are a natural generalization of the partition lattice. We give a combinatorial descript...
Richard Ehrenborg, Margaret Readdy
FFA
2006
77views more  FFA 2006»
13 years 4 months ago
Linear error-block codes
A linear error-block code is a natural generalization of the classical error-correcting code and has applications in experimental design, high-dimensional numerical integration an...
Keqin Feng, Lanju Xu, Fred J. Hickernell
OPODIS
2008
13 years 6 months ago
Group Renaming
We study the group renaming problem, which is a natural generalization of the renaming problem. An instance of this problem consists of n processors, partitioned into m groups, ea...
Yehuda Afek, Iftah Gamzu, Irit Levy, Michael Merri...
FCT
2003
Springer
13 years 10 months ago
Operations Preserving Recognizable Languages
Abstract. Given a subset S of N, filtering a word a0a1 · · · an by S consists in deleting the letters ai such that i is not in S. By a natural generalization, denote by L[S], w...
Jean Berstel, Luc Boasson, Olivier Carton, Bruno P...
CPAIOR
2005
Springer
13 years 10 months ago
Multiconsistency and Robustness with Global Constraints
We propose a natural generalization of arc-consistency, which we call multiconsistency: A value v in the domain of a variable x is kmulticonsistent with respect to a constraint C i...
Khaled M. Elbassioni, Irit Katriel