Statements (17)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:mathematical_concept
|
| gptkbp:alsoKnownAs |
gptkb:Kissing_circle_theorem
|
| gptkbp:appliesTo |
curvatures of circles
|
| gptkbp:describes |
relationship between four mutually tangent circles
|
| gptkbp:field |
gptkb:geometry
|
| gptkbp:form |
(k1 + k2 + k3 + k4)^2 = 2(k1^2 + k2^2 + k3^2 + k4^2)
|
| gptkbp:generalizes |
gptkb:Soddy's_formula
|
| https://www.w3.org/2000/01/rdf-schema#label |
Descartes' theorem
|
| gptkbp:namedAfter |
gptkb:René_Descartes
|
| gptkbp:publicationYear |
1643
|
| gptkbp:relatedTo |
gptkb:Apollonian_gasket
tangent circles circle packing |
| gptkbp:usedIn |
fractal geometry
mathematical recreations |
| gptkbp:bfsParent |
gptkb:Soddy's_hexlet
|
| gptkbp:bfsLayer |
6
|