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FUIN
2010
158views more  FUIN 2010»
13 years 5 months ago
Cellular Automata, Decidability and Phasespace
Abstract. Cellular automata have rich computational properties and, at the same time, provide plausible models of physics-like computation. We study decidability issues in the phas...
Klaus Sutner
MST
2011
206views Hardware» more  MST 2011»
13 years 2 months ago
Weighted Logics for Unranked Tree Automata
: We define a weighted monadic second order logic for unranked trees and the concept of weighted unranked tree automata, and we investigate the expressive power of these two conce...
Manfred Droste, Heiko Vogler
CORR
2010
Springer
141views Education» more  CORR 2010»
13 years 7 months ago
The complexity of linear-time temporal logic over the class of ordinals
We consider the temporal logic with since and until modalities. This temporal logic is expressively equivalent over the class of ordinals to first-order logic by Kamp's theore...
Stéphane Demri, Alexander Rabinovich
NDJFL
1998
81views more  NDJFL 1998»
13 years 7 months ago
An Undecidable Linear Order That Is n-Decidable for All n
A linear order is n-decidable if its universe is N and the relations determined by n formulas are uniformly computable. This means that there is a computable procedure which, when ...
John Chisholm, Michael Moses
ORDER
2002
73views more  ORDER 2002»
13 years 7 months ago
Antichains in Products of Linear Orders
We show that: (1) For many regular cardinals (in particular, for all successors of singular strong limit cardinals, and for all successors of singular -limits), for all n {2, 3, ...
Martin Goldstern, Saharon Shelah