English Explanatory Dictionary

Tschirnhausen cubic

English dictionary entry

Meanings

noun
  1. 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.

Word forms

Tschirnhausen cubic Tschirnhausen cubics Tschirnhaus' cubic

Etymology

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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