COCO
2004
Springer
14 years 4 months ago
2004
Springer
Juedes and Lutz (1995) proved a small span theorem for polynomial-time many-one reductions in exponential time. This result says that for language A decidable in exponential time,...
CIE
2009
Springer
14 years 7 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...