31 search results - page 1 / 7 » The complexity of positive first-order logic without equalit... |
CSL
2010
Springer
13 years 6 months ago
2010
Springer
We study the complexity of evaluating positive equality-free sentences of first-order (FO) logic over fixed, finite structures B. This may be seen as a natural generalisation of th...
LICS
2006
IEEE
13 years 11 months ago
2006
IEEE
We consider the monadic boundedness problem for least fixed points over FO formulae as a decision problem: Given a formula ϕ(X, x), positive in X, decide whether there is a unif...
CIE
2009
Springer
13 years 11 months ago
2009
Springer
Let Γ be a (not necessarily finite) structure with a finite relational signature. We prove that deciding whether a given existential positive sentence holds in Γ is in LOGSPACE...
CORR
2010
Springer
13 years 5 months ago
2010
Springer
We study the complexity of evaluating positive equality-free sentences of first-order (FO) logic over a fixed, finite structure B. This may be seen as a natural generalisation of ...
CADE
2005
Springer
14 years 5 months ago
2005
Springer
Our general goal is to provide better automation in interactive proof assistants such as Coq. We present an interpreter of proof traces in first-order multi-sorted logic with equal...