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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. Curve - Wikipedia

    en.wikipedia.org/wiki/Curve

    A space curve is a curve for which is at least three-dimensional; a skew curve is a space curve which lies in no plane. These definitions of plane, space and skew curves apply also to real algebraic curves , although the above definition of a curve does not apply (a real algebraic curve may be disconnected ).

  4. List of curves - Wikipedia

    en.wikipedia.org/wiki/List_of_curves

    1.1 Algebraic curves. 1.1.1 Rational curves. 1.1.1.1 Degree 1. ... This is a list of Wikipedia articles about curves used in different fields: mathematics ...

  5. Algebraic variety - Wikipedia

    en.wikipedia.org/wiki/Algebraic_variety

    The twisted cubic is a projective algebraic variety. Algebraic varieties are the central objects of study in algebraic geometry, a sub-field of mathematics. Classically, an algebraic variety is defined as the set of solutions of a system of polynomial equations over the real or complex numbers. Modern definitions generalize this concept in ...

  6. Implicit curve - Wikipedia

    en.wikipedia.org/wiki/Implicit_curve

    Implicit means that the equation is not expressed as a solution for either x in terms of y or vice versa. If (,) is a polynomial in two variables, the corresponding curve is called an algebraic curve, and specific methods are available for studying it.

  7. Elliptic curve - Wikipedia

    en.wikipedia.org/wiki/Elliptic_curve

    Graphs of curves y 2 = x 3 − x and y 2 = x 3 − x + 1. Although the formal definition of an elliptic curve requires some background in algebraic geometry, it is possible to describe some features of elliptic curves over the real numbers using only introductory algebra and geometry.

  8. Singular point of a curve - Wikipedia

    en.wikipedia.org/wiki/Singular_point_of_a_curve

    Algebraic curves in the plane may be defined as the set of points (x, y) satisfying an equation of the form (,) =, where f is a polynomial function ⁠:. ⁠ If f is expanded as = + + + + + + If the origin (0, 0) is on the curve then a 0 = 0.

  9. Manifold - Wikipedia

    en.wikipedia.org/wiki/Manifold

    Four manifolds from algebraic curves: circles, parabola, hyperbola, cubic. Manifolds need not be connected (all in "one piece"); an example is a pair of separate circles. Manifolds need not be closed; thus a line segment without its end points is a manifold. They are never countable, unless the dimension of the manifold is 0.

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