Statements (12)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
modal logic formula
|
| gptkbp:application |
axiomatization of modal logics
|
| gptkbp:characterizedBy |
gptkb:Sahlqvist's_theorem
|
| gptkbp:field |
gptkb:logic
|
| https://www.w3.org/2000/01/rdf-schema#label |
Sahlqvist formula
|
| gptkbp:introducedIn |
1975
|
| gptkbp:namedAfter |
gptkb:Henrik_Sahlqvist
|
| gptkbp:property |
canonicity
first-order definability |
| gptkbp:usedIn |
gptkb:Kripke_semantics
|
| gptkbp:bfsParent |
gptkb:Hanna_Sahlqvist
|
| gptkbp:bfsLayer |
6
|