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MP
2006
113views more  MP 2006»
15 years 4 months ago
A class of polynomially solvable linear complementarity problems
Although the general linear complementarity problem (LCP) is NP-complete, there are special classes that can be solved in polynomial time. One example is the type where the definin...
Teresa H. Chu
MOC
2002
108views more  MOC 2002»
15 years 3 months ago
Convergence of the multigrid $V$-cycle algorithm for second-order boundary value problems without full elliptic regularity
The multigrid V -cycle algorithm using the Richardson relaxation scheme as the smoother is studied in this paper. For second-order elliptic boundary value problems, the contraction...
Susanne C. Brenner
COCOA
2008
Springer
15 years 6 months ago
Elementary Approximation Algorithms for Prize Collecting Steiner Tree Problems
This paper deals with approximation algorithms for the prize collecting generalized Steiner forest problem, defined as follows. The input is an undirected graph G = (V, E), a colle...
Shai Gutner
CIE
2007
Springer
15 years 10 months ago
Post's Problem for Ordinal Register Machines
We study Post’s Problem for the ordinal register machines defined in [6], showing that its general solution is positive, but that any set of ordinals solving it must be unbounde...
Joel David Hamkins, Russell G. Miller
CSL
2007
Springer
15 years 8 months ago
Logical Refinements of Church's Problem
Abstract. Church's Problem (1962) asks for the construction of a procedure which, given a logical specification on sequence pairs, realizes for any input sequence X an output...
Alexander Rabinovich, Wolfgang Thomas