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Statements (14)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:mathematical_concept
|
| gptkbp:appliesTo |
ellipses
hyperbolas |
| gptkbp:describes |
properties of confocal conic sections
|
| gptkbp:field |
gptkb:geometry
|
| gptkbp:namedAfter |
gptkb:James_Ivory
|
| gptkbp:publicationYear |
1809
|
| gptkbp:publishedIn |
gptkb:Philosophical_Transactions_of_the_Royal_Society
|
| gptkbp:relatedTo |
gptkb:Laplace's_equation
potential theory |
| gptkbp:state |
the sum of the distances from a point to two fixed confocal ellipses is constant along certain lines
|
| gptkbp:bfsParent |
gptkb:Sir_James_Ivory
|
| gptkbp:bfsLayer |
4
|
| https://www.w3.org/2000/01/rdf-schema#label |
Ivory's theorem
|