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ICCS
2007
Springer
15 years 8 months ago
Hierarchical-Matrix Preconditioners for Parabolic Optimal Control Problems
Abstract. Hierarchical (H)-matrices approximate full or sparse matrices using a hierarchical data sparse format. The corresponding H-matrix arithmetic reduces the time complexity o...
Suely Oliveira, Fang Yang
126
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WABI
2004
Springer
15 years 7 months ago
The Minisatellite Transformation Problem Revisited: A Run Length Encoded Approach
Abstract. In this paper we present a more efficient algorithm for comparison of minisatellites which has complexity O(n 3 + m 3 + mn 2 + nm 2 + mn) where n and m are the lengths of...
Behshad Behzadi, Jean-Marc Steyaert
BIRTHDAY
2010
Springer
15 years 3 months ago
Metrization Theorem for Space-Times: From Urysohn's Problem towards Physically Useful Constructive Mathematics
In the early 1920s, Pavel Urysohn proved his famous lemma (sometimes referred to as "first non-trivial result of point set topology"). Among other applications, this lemm...
Vladik Kreinovich
IJCGA
2006
85views more  IJCGA 2006»
15 years 2 months ago
Some Lower Bounds on Geometric Separability Problems
We obtain lower bounds in the algebraic computation tree model for deciding the separability of two disjoint point sets. In particular, we show (n log n) time lower bounds for sep...
Esther M. Arkin, Ferran Hurtado, Joseph S. B. Mitc...
JSAT
2006
94views more  JSAT 2006»
15 years 2 months ago
A Note on the Use of Independent Sets for the k-SAT Problem
An independent set of variables is one in which no two variables occur in the same clause in a given k-SAT instance. Recently, independent sets have obtained more attention. Due t...
Konstantin Kutzkov