In geometry, the **Pappus chain** was created by Pappus of Alexandria in the 3rd century AD.

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### Other articles related to "pappus chain, chain":

**Pappus Chain**- Properties - Steiner Chain

... In these properties of having centers on an ellipse and tangencies on a circle, the

**Pappus chain**is analogous to the Steiner

**chain**, in which finitely many circles are tangent to two circles ...

Steiner Chain - Elliptical/hyperbolic Locus of Centers

... The centers of the circles of a Steiner

... The centers of the circles of a Steiner

**chain**lie on a conic section ... to the other such systems of circles appear in the**Pappus chain**, the problem of Apollonius, and the three-dimensional Soddy's hexlet ... Similarly, if some circles of the Steiner**chain**are externally tangent to both given circles, their centers must lie on a hyperbola, whereas those that are internally tangent to both lie on ...### Famous quotes containing the word chain:

“It is the future that creates his present.

All is an interminable *chain* of longing.”

—Robert Frost (1874–1963)

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