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Complex projective plane information


In mathematics, the complex projective plane, usually denoted P2(C) or CP2, is the two-dimensional complex projective space. It is a complex manifold of complex dimension 2, described by three complex coordinates

where, however, the triples differing by an overall rescaling are identified:

That is, these are homogeneous coordinates in the traditional sense of projective geometry.

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Complex projective plane

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the complex projective plane, usually denoted P2(C) or CP2, is the two-dimensional complex projective space. It is a complex manifold of complex dimension...

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Projective plane

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the complex projective plane, and finite, such as the Fano plane. A projective plane is a 2-dimensional projective space. Not all projective planes can...

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Complex projective space

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complex projective space is the projective space with respect to the field of complex numbers. By analogy, whereas the points of a real projective space...

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Projective space

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concept of a projective space originated from the visual effect of perspective, where parallel lines seem to meet at infinity. A projective space may thus...

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Riemann sphere

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readily to projective geometry. For example, any line (or smooth conic) in the complex projective plane is biholomorphic to the complex projective line. It...

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Algebraic curve

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algebraic plane curve is the zero set of a polynomial in two variables. A projective algebraic plane curve is the zero set in a projective plane of a homogeneous...

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Projective geometry

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In mathematics, projective geometry is the study of geometric properties that are invariant with respect to projective transformations. This means that...

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Conic section

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} . A projective mapping is a finite sequence of perspective mappings. As a projective mapping in a projective plane over a field (pappian plane) is uniquely...

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Real projective line

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In geometry, a real projective line is a projective line over the real numbers. It is an extension of the usual concept of a line that has been historically...

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Complex plane

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In mathematics, the complex plane is the plane formed by the complex numbers, with a Cartesian coordinate system such that the horizontal x-axis, called...

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Homogeneous coordinates

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case of the real projective spaces, however any field may be used, in particular, the complex numbers may be used for complex projective space. For example...

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Fake projective plane

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fake projective plane (or Mumford surface) is one of the 50 complex algebraic surfaces that have the same Betti numbers as the projective plane, but are...

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Outline of geometry

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infinity Projective line Projective plane Oval (projective plane) Roman surface Projective space Complex projective line Complex projective plane Fundamental...

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Elliptic curve

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elliptic curves defined over the complex numbers correspond to embeddings of the torus into the complex projective plane. The torus is also an abelian group...

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Isotropic line

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the surface, and we also call them isotropic lines.: 90  In the complex projective plane, points are represented by homogeneous coordinates ( x 1 , x 2...

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Smooth projective plane

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smooth projective planes are special projective planes. The most prominent example of a smooth projective plane is the real projective plane E {\displaystyle...

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List of manifolds

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space, Rn n-sphere, Sn n-torus, Tn Real projective space, RPn Complex projective space, CPn Quaternionic projective space, HPn Flag manifold Grassmann manifold...

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Fermat curve

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In mathematics, the Fermat curve is the algebraic curve in the complex projective plane defined in homogeneous coordinates (X:Y:Z) by the Fermat equation:...

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Complex geometry

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otherwise. A projective complex analytic variety is a subset X ⊆ C P n {\displaystyle X\subseteq \mathbb {CP} ^{n}} of complex projective space that is...

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Toric variety

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of toric varieties are affine space, projective spaces, products of projective spaces and bundles over projective space. The original motivation to study...

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Real projective space

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{\displaystyle w_{1}} , which has degree 1. Complex projective space Quaternionic projective space Lens space Real projective plane See the table of Don Davis for...

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Circular points at infinity

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infinity in the complex projective plane that are contained in the complexification of every real circle. A point of the complex projective plane may be described...

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Thom conjecture

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mathematics, a smooth algebraic curve C {\displaystyle C} in the complex projective plane, of degree d {\displaystyle d} , has genus given by the genus–degree...

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Quaternionic projective space

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In mathematics, quaternionic projective space is an extension of the ideas of real projective space and complex projective space, to the case where coordinates...

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Plane curve

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In mathematics, a plane curve is a curve in a plane that may be a Euclidean plane, an affine plane or a projective plane. The most frequently studied cases...

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