160 search results - page 31 / 32 » Homomorphism preservation theorems |
CONSTRAINTS
2010
13 years 7 months ago
2010
Abstract. We had claimed that arc-consistency is preserved in a constraint reformulation relying on functional dependencies (Theorem 2 of [2]). We show that the statement of this t...
JSYML
2008
13 years 7 months ago
2008
free but not Whitehead Abelian groups to construct Abstract Elementary Classes (AEC) which satisfy the amalgamation property but fail various conditions on the locality of Galois-...
ATAL
2009
Springer
14 years 2 months ago
2009
Springer
ion in model checking multi-agent systems Mika Cohen Department of Computing Imperial College London London, UK Mads Dam Access Linnaeus Center Royal Institute of Technology Stockh...
POPL
2010
ACM
14 years 4 months ago
2010
ACM
Since Findler and Felleisen [2002] introduced higher-order contracts, many variants have been proposed. Broadly, these fall into two groups: some follow Findler and Felleisen in u...
RTA
2005
Springer
14 years 28 days ago
2005
Springer
Proofs of equalities may be built from assumptions using proof rules for reflexivity, symmetry, and transitivity. Reflexivity is an axiom proving x=x for any x; symmetry is a 1-p...