Definition:Confocal Conicoids
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Definition
Confocal conicoids are conicoids which have:
- the same principal planes
- sections by the principal planes which are confocal conics.
Also see
- Results about conicoids can be found here.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): confocal conicoids
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): confocal conicoids