23 search results - page 2 / 5 » Decidability of MSO Theories of Tree Structures |
CSL
2010
Springer
13 years 8 months ago
2010
Springer
We present a new algorithm for model-checking weak monadic second-order logic on inductive structures, a class of structures of bounded clique width. Our algorithm directly manipul...
PODS
2007
ACM
14 years 7 months ago
2007
ACM
The pebble tree automaton and the pebble tree transducer are enhanced by additionally allowing an unbounded number of `invisible' pebbles (as opposed to the usual `visible�...
FSTTCS
2010
Springer
13 years 5 months ago
2010
Springer
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...
CORR
2004
Springer
13 years 7 months ago
2004
Springer
We show that the first-order theory of structural subtyping of non-recursive types is decidable. Let be a language consisting of function symbols (representing type constructors)...
POPL
2002
ACM
14 years 8 months ago
2002
ACM
We investigate the first-order theory of subtyping constraints. We show that the first-order theory of nonstructural subtyping is undecidable, and we show that in the case where a...