LICS
2003
IEEE
14 years 4 months ago
2003
IEEE
We show that the first-order theory of structural subtyping of non-recursive types is decidable, as a consequence of a more general result on the decidability of term powers of d...
LICS
2006
IEEE
14 years 4 months ago
2006
IEEE
Logical properties of iterations of relational structures are studied and these decidability results are applied to the model checking of a powerful extension of pushdown systems....
RTA
2009
Springer
14 years 5 months ago
2009
Springer
It is known that the first-order theory with a single predicate → that denotes one-step rewriting reduction on terms is undecidable already for formulae with ∃∀ prefix. Sev...
CSL
2009
Springer
14 years 5 months ago
2009
Springer
Abstract. It it shown that the first-order theory of an automatic structure, whose Gaifman graph has bounded degree, is decidable in doubly exponential space (for injective automa...