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» On the Random-Self-Reducibility of Complete Sets
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79
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AMC
2005
120views more  AMC 2005»
15 years 20 days ago
ICS: a package for computing involutive characteristic set of algebraic partial differential equation systems
A constructive algorithm for the completion of arbitrary algebraic partial differential equation systems to involutive ones are presented. Based on it, an implementation ICS for c...
Shan-Qing Zhang, Gui-Xu Zhang, Zhi-Bin Li
95
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AML
2006
83views more  AML 2006»
15 years 25 days ago
The Medvedev lattice of computably closed sets
Simpson introduced the lattice P of 0 1 classes under Medvedev reducibility. Questions regarding completeness in P are related to questions about measure and randomness. We presen...
Sebastiaan Terwijn
80
Voted
AML
2005
53views more  AML 2005»
15 years 20 days ago
Models of set theory with definable ordinals
A DO model (here also referred to a Paris model) is a model M of set theory all of whose ordinals are first order definable in M. Jeffrey Paris (1973) initiated the study of DO mo...
Ali Enayat
108
Voted
APPROX
2009
Springer
153views Algorithms» more  APPROX 2009»
15 years 7 months ago
Average-Case Analyses of Vickrey Costs
We explore the average-case “Vickrey” cost of structures in a random setting: the Vickrey cost of a shortest path in a complete graph or digraph with random edge weights; the V...
Prasad Chebolu, Alan M. Frieze, Páll Melste...
KI
2004
Springer
15 years 6 months ago
Model Based Deduction for Database Schema Reasoning
Abstract. We aim to demonstrate that automated deduction techniques, in particular those following the model computation paradigm, are very well suited for database schema/query re...
Peter Baumgartner, Ulrich Furbach, Margret Gro&szl...