Statements (15)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:mathematical_concept
|
| gptkbp:alsoKnownAs |
gptkb:Kissing_circle_theorem
|
| gptkbp:appliesTo |
tangent circles
|
| gptkbp:describes |
relationship between radii of four mutually tangent circles
|
| gptkbp:field |
gptkb:geometry
|
| gptkbp:form |
(k1 + k2 + k3 + k4)^2 = 2(k1^2 + k2^2 + k3^2 + k4^2)
|
| https://www.w3.org/2000/01/rdf-schema#label |
Soddy's formula
|
| gptkbp:location |
k_i is the curvature (reciprocal of radius) of the i-th circle
|
| gptkbp:namedAfter |
gptkb:Frederick_Soddy
|
| gptkbp:publicationYear |
1936
|
| gptkbp:publishedIn |
gptkb:Nature
|
| gptkbp:relatedTo |
gptkb:Descartes'_theorem
|
| gptkbp:bfsParent |
gptkb:Descartes'_Theorem
gptkb:Descartes'_theorem |
| gptkbp:bfsLayer |
7
|