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  2. Algebraic curve - Wikipedia

    en.wikipedia.org/wiki/Algebraic_curve

    An algebraic curve in the Euclidean plane is the set of the points whose coordinates are the solutions of a bivariate polynomial equation p(x, y) = 0.This equation is often called the implicit equation of the curve, in contrast to the curves that are the graph of a function defining explicitly y as a function of x.

  3. Plane curve - Wikipedia

    en.wikipedia.org/wiki/Plane_curve

    A plane curve can often be represented in Cartesian coordinates by an implicit equation of the form (,) = for some specific function f.If this equation can be solved explicitly for y or x – that is, rewritten as = or = for specific function g or h – then this provides an alternative, explicit, form of the representation.

  4. List of curves - Wikipedia

    en.wikipedia.org/wiki/List_of_curves

    1.1 Algebraic curves. 1.1.1 Rational curves. ... Download as PDF; Printable version; ... Plane curves of degree 2 are known as conics or conic sections and include

  5. Bitangents of a quartic - Wikipedia

    en.wikipedia.org/wiki/Bitangents_of_a_quartic

    The Trott curve and seven of its bitangents. The others are symmetric with respect to 90° rotations through the origin. The Trott curve with all 28 bitangents. In the theory of algebraic plane curves, a general quartic plane curve has 28 bitangent lines, lines that are tangent to the curve in two

  6. Category:Plane curves - Wikipedia

    en.wikipedia.org/wiki/Category:Plane_curves

    Download as PDF; Printable version; ... Algebraic curves (7 C, 95 P) C. ... (1 C, 16 P) Pages in category "Plane curves" The following 45 pages are in this category ...

  7. Genus–degree formula - Wikipedia

    en.wikipedia.org/wiki/Genus–degree_formula

    In classical algebraic geometry, the genus–degree formula relates the degree of an irreducible plane curve with its arithmetic genus via the formula: = (). Here "plane curve" means that is a closed curve in the projective plane.

  8. Quartic plane curve - Wikipedia

    en.wikipedia.org/wiki/Quartic_plane_curve

    The cruciform curve, or cross curve is a quartic plane curve given by the equation = where a and b are two parameters determining the shape of the curve. The cruciform curve is related by a standard quadratic transformation, x ↦ 1/x, y ↦ 1/y to the ellipse a 2 x 2 + b 2 y 2 = 1, and is therefore a rational plane algebraic curve of genus zero.

  9. Cayley–Bacharach theorem - Wikipedia

    en.wikipedia.org/wiki/Cayley–Bacharach_theorem

    In mathematics, the Cayley–Bacharach theorem is a statement about cubic curves (plane curves of degree three) in the projective plane P 2. The original form states: Assume that two cubics C 1 and C 2 in the projective plane meet in nine (different) points, as they do in general over an algebraically closed field. Then every cubic that passes ...

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