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Special cubics and quartics produced by projective pencils of straight lines and conics

Marshall, Robert Haskell · 1916 · 9 pictures

A 1916 mathematics thesis by Robert Haskell Marshall at the University of Illinois, constructing cubic and quartic curves from projective pencils of lines and conics. The plates are hand-drawn line diagrams in black ink on tinted paper: looping curves crossing labelled axes, nested circles, radiating tangent lines, and handwritten equations set in the margins.

Curves, Cubic · Curves, Quartic · Polynomial operator pencils · Conics, Spherical · Geometry, Projective · Theses

Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0