Statements (16)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
logical formula
|
| gptkbp:appliesTo |
quantified modal logic
|
| gptkbp:concerns |
necessity
possibility domain variation |
| gptkbp:contrapositive |
◇∀xP(x) → ∀x◇P(x)
|
| gptkbp:discusses |
philosophy of language
philosophy of logic |
| gptkbp:field |
gptkb:logic
|
| gptkbp:firstPublished |
1946
|
| https://www.w3.org/2000/01/rdf-schema#label |
converse Barcan formula
|
| gptkbp:namedAfter |
gptkb:Ruth_Barcan_Marcus
|
| gptkbp:relatedTo |
gptkb:Barcan_formula
|
| gptkbp:symbol |
∀x◇P(x) → ◇∀xP(x)
|
| gptkbp:bfsParent |
gptkb:Barcan_formula
|
| gptkbp:bfsLayer |
5
|