Donghong Zhang
Abstract
A method of discussing the curve structure and projective structure of the normal quadric surface is presented based on main curve crossing and contour line in this paper and the normal quadric surface is expressed by the locus of the plane crossing.
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A method of discussing the curve structure and projective structure of the normal quadric surface is presented based on main curve crossing and contour line in this paper and the normal quadric surface is expressed by the locus of the plane crossing.
Key concepts: Quadric, Mathematics, Surface (topology), Locus (genetics), Geometry, Projective line, Line (geometry), Projective plane