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ENTCS
2000
83views more  ENTCS 2000»
15 years 2 months ago
Typed Logical Variables in Haskell
We describe how to embed a simple typed functional logic programming language in Haskell. The embedding is a natural extension of the Prolog embedding by Seres and Spivey [16]. To...
Koen Claessen, Peter Ljunglöf
116
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SIAMCOMP
2000
101views more  SIAMCOMP 2000»
15 years 2 months ago
The Complexity of the A B C Problem
-fields are a very general class of difference fields that enable one to discover and prove multisum identities arising in combinatorics and special functions. In this article we f...
Jin-yi Cai, Richard J. Lipton, Yechezkel Zalcstein
138
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COMBINATORICS
1999
85views more  COMBINATORICS 1999»
15 years 2 months ago
Permutation Patterns and Continued Fractions
We find, in the form of a continued fraction, the generating function for the number of (132)-avoiding permutations that have a given number of (123) patterns, and show how to ext...
Aaron Robertson, Herbert S. Wilf, Doron Zeilberger
116
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AUTOMATICA
2008
146views more  AUTOMATICA 2008»
15 years 2 months ago
Input-to-state stability and interconnections of discontinuous dynamical systems
In this paper we will extend the input-to-state stability (ISS) framework to continuous-time discontinuous dynamical systems (DDS) adopting piecewise smooth ISS Lyapunov functions...
W. P. M. H. Heemels, Siep Weiland
123
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GPEM
2006
127views more  GPEM 2006»
15 years 2 months ago
A hierarchical particle swarm optimizer for noisy and dynamic environments
New Particle Swarm Optimization (PSO) methods for dynamic and noisy function optimization are studied in this paper. The new methods are based on the hierarchical PSO (H-PSO) and a...
Stefan Janson, Martin Middendorf