Tschirnhausen cubic

noun

A plane curve defined, in its left-opening form, by the polar equation r=a sec ³(θ/3) where sec is the secant function.

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Meanings

nounTschirnhausen cubic (plural Tschirnhausen cubics)

plural Tschirnhausen cubics · alternative Tschirnhaus' cubic

  1. geometryA plane curve defined, in its left-opening form, by the polar equation r=a sec ³(θ/3) where sec is the secant function.

Origin

Named after Ehrenfried Walther von Tschirnhaus (1651–1708), German mathematician, physicist, physician, and philosopher. The name was first used in a 1900 paper by R. C. Archibald.

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Cite this entry
APA

Tschirnhausen cubic. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Tschirnhausen%20cubic

MLA

“Tschirnhausen cubic.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Tschirnhausen%20cubic. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “Tschirnhausen cubic,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Tschirnhausen%20cubic.

Source: Tschirnhausen cubic on Wiktionary, CC BY-SA 4.0.