Poinsot's spirals

This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources. Find sources: "Poinsot's spirals" – news · newspapers · books · scholar · JSTOR (May 2024)

In mathematics, Poinsot's spirals are two spirals represented by the polar equations

${\displaystyle r=a\ \operatorname {csch} (n\theta )}$

${\displaystyle r=a\ \operatorname {sech} (n\theta )}$

where csch is the hyperbolic cosecant, and sech is the hyperbolic secant.^[1] They are named after the French mathematician Louis Poinsot.

This geometry-related article is a stub. You can help Wikipedia by expanding it.

• v
• t
• e