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MST
2006
129views more  MST 2006»
13 years 11 months ago
Reachability Problems on Regular Ground Tree Rewriting Graphs
We consider the transition graphs of regular ground tree (or term) rewriting systems. The vertex set of such a graph is a (possibly infinite) set of trees. Thus, with a finite tree...
Christof Löding
MFCS
2007
Springer
14 years 5 months ago
Transition Graphs of Rewriting Systems over Unranked Trees
We investigate algorithmic properties of infinite transition graphs that are generated by rewriting systems over unranked trees. Two kinds of such rewriting systems are studied. ...
Christof Löding, Alex Spelten
FSTTCS
2010
Springer
13 years 9 months ago
First-Order Logic with Reachability Predicates on Infinite Systems
This paper focuses on first-order logic (FO) extended by reachability predicates such that the expressiveness and hence decidability properties lie between FO and monadic second-o...
Stefan Schulz
CSR
2009
Springer
14 years 3 months ago
The Reachability Problem over Infinite Graphs
Abstract. We survey classical and selected recent work on the reachability problem over finitely presented infinite graphs. The problem has a history of 100 years, and it is centra...
Wolfgang Thomas
ENTCS
2002
108views more  ENTCS 2002»
13 years 11 months ago
Rewriting in the partial algebra of typed terms modulo AC
We study the partial algebra of typed terms with an associative commutative and idempotent operator (typed AC-terms). The originality lies in the representation of the typing poli...
Thomas Colcombet