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Mathematical concept
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
Complex_projective_space
Completion of the usual space with "points at infinity"
point", which is subject to the axioms of projective geometry. For some such set of axioms, the projective spaces that are defined have been shown to be
Projective_space
Type of topological space
the Universal coefficient theorem. Complex projective space Quaternionic projective space Lens space Real projective plane See the table of Don Davis for
Real_projective_space
Generalized Euclidean space in mathematics
quantum mechanics, the projective Hilbert space or ray space P ( H ) {\displaystyle \mathbf {P} (H)} of a complex Hilbert space H {\displaystyle H} is
Projective_Hilbert_space
Algebraic variety in a projective space
In algebraic geometry, a projective variety is an algebraic variety that is a closed subvariety of a projective space. That is, it is the zero-locus in
Projective_variety
2-dimensional complex projective space
is the two-dimensional complex projective space. It is a complex manifold of complex dimension 2, described by three complex coordinates ( Z 1 , Z 2
Complex_projective_plane
Model of the extended complex plane plus a point at infinity
simplest complex manifolds. In projective geometry, the sphere is an example of a complex projective space and can be thought of as the complex projective line
Riemann_sphere
Concept in mathematics
mathematics, quaternionic projective space is an extension of the ideas of real projective space and complex projective space, to the case where coordinates
Quaternionic_projective_space
the complex vector space C n + 1 {\displaystyle \mathbb {C} ^{n+1}} . The projective model of the complex hyperbolic space is the projectivized space of
Complex_hyperbolic_space
Theory in algebraic topology
if a CW-complex has no cells in consecutive dimensions, then all of its homology modules are free. For example, the complex projective space C P n {\displaystyle
Cellular_homology
Type of geometry
compared to elementary Euclidean geometry, projective geometry has a different setting (projective space) and a selective set of basic geometric concepts
Projective_geometry
Fiber bundle of the 3-sphere over the 2-sphere, with 1-spheres as fibers
fibrations. First, one can replace the projective line by an n-dimensional projective space. Second, one can replace the complex numbers by any (real) division
Hopf_fibration
Index of articles associated with the same name
are holomorphic Complex projective space, a projective space with respect to the field of complex numbers Unitary space, a vector space with the addition
Complex_space
Quotient of special unitary group by its center
isometry group of complex projective space, just as the projective orthogonal group is the isometry group of real projective space. In terms of matrices
Projective_unitary_group
Optimal stable 2-systolic inequality
{CP} ^{n})} , valid for an arbitrary Riemannian metric on the complex projective space, where the optimal bound is attained by the symmetric Fubini–Study
Gromov's inequality for complex projective space
Gromov's_inequality_for_complex_projective_space
Study of complex manifolds and several complex variables
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, in
Complex_geometry
Spectral sequence in algebraic topology
{\displaystyle \mathbb {Z} [x]/x^{n+1}.} In the case of infinite complex projective space, taking limits gives the answer Z [ x ] . {\displaystyle \mathbb
Serre_spectral_sequence
conventional projective space to a point. More concretely, in a real projective space, complex projective space or quaternionic projective space K P n {\displaystyle
Stunted_projective_space
Tool to track locally defined data attached to the open sets of a topological space
complex manifolds. For example, on a compact complex manifold X {\displaystyle X} (like complex projective space or the vanishing locus in projective
Sheaf_(mathematics)
Affine space over the complex numbers
algebraic geometry, the other being projective geometry. A complex affine space can be obtained from a complex projective space by fixing a hyperplane, which
Complex_affine_space
Geometric concept of a 2D space with "points at infinity" adjoined
as the complex projective plane, and finite, such as the Fano plane. A projective plane is a 2-dimensional projective space. Not all projective planes
Projective_plane
Characteristic classes of vector bundles
in which the hairs are complex (see the example of the complex hairy ball theorem below), or for 1-dimensional projective spaces over many other fields
Chern_class
Geometric space whose points represent algebro-geometric objects of some fixed kind
^{n+1}} . Similarly, complex projective space P n ( C ) {\displaystyle \mathbb {P} ^{n}(\mathbb {C} )} is the space of all complex lines through the origin
Moduli_space
Algebraic construct classifying topological spaces
that they can represent "holes" in a topological space. However, homotopy groups are often very complex and hard to compute. In contrast, homology groups
Homotopy_group
Vector bundle of rank 1
analogous way, the complex projective space C P ∞ {\displaystyle \mathbb {C} \mathbf {P} ^{\infty }} carries a universal complex line bundle. In this
Line_bundle
Manifold or algebraic variety of dimension n in a space of dimension n+1
rational over the Gaussian rationals. A projective (algebraic) hypersurface of dimension n – 1 in a projective space of dimension n over a field k is defined
Hypersurface
sheaf cohomology groups on complex projective space. The projective space in question is the twistor space, a geometrical space naturally associated to the
Penrose_transform
Curve defined as zeros of polynomials
zero set of a polynomial in two variables. A projective algebraic plane curve is the zero set in a projective plane of a homogeneous polynomial in three
Algebraic_curve
Type of mathematical functions
that cannot be embedded in projective space and are not algebraic. Analogy of the Levi problems on the complex projective space C P n {\displaystyle \mathbb
Function of several complex variables
Function_of_several_complex_variables
Branch of mathematics
contained in U.) Complex dynamics has been effectively developed in any dimension. This section focuses on the mappings from complex projective space C P n {\displaystyle
Complex_dynamics
Projective variety that is also an algebraic group
particularly in algebraic geometry, complex analysis and algebraic number theory, an abelian variety is a smooth projective algebraic variety that is also
Abelian_variety
Compact non-orientable two-dimensional manifold
called the projective plane; the qualifier "real" is added to distinguish it from other projective planes such as the complex projective plane and finite
Real_projective_plane
Connected non-abelian Lie group lacking nontrivial connected normal subgroups
connected symmetric spaces. (For example, the universal cover of a real projective plane is a sphere.) Second, the product of symmetric spaces is symmetric,
Simple_Lie_group
Quotient of a weakly contractible space by a free action
} The infinite dimensional complex projective space C P ∞ {\displaystyle \mathbb {CP} ^{\infty }} is the classifying space BS1 for the circle S1 thought
Classifying_space
Type of mathematical space
generalized flag variety is defined to mean a projective homogeneous variety, that is, a smooth projective variety X over a field F with a transitive action
Generalized_flag_variety
projective geometry an ovoid is a sphere like pointset (surface) in a projective space of dimension d ≥ 3. Simple examples in a real projective space
Ovoid_(projective_geometry)
Examples hyperbolic space Gauss–Bolyai–Lobachevsky space Grassmannian Complex projective space Real projective space Euclidean space Stiefel manifold Upper
List of differential geometry topics
List_of_differential_geometry_topics
Theorem in the mathematical formulation of quantum mechanics
transition probability. Ray space, in mathematics known as projective Hilbert space, is the space of all unit vectors in Hilbert space up to the equivalence
Wigner's_theorem
Construction in group theory
especially in the group theoretic area of algebra, the projective linear group (also known as the projective general linear group or PGL) is the induced action
Projective_linear_group
Oriented projective geometry is an oriented version of real projective geometry. Whereas the real projective plane describes the set of all unoriented
Oriented_projective_geometry
Manifold
complex manifolds, including: Complex vector spaces. Complex projective spaces, Pn(C). Complex Grassmannians. Complex Lie groups such as GL(n, C) or
Complex_manifold
Generalization of the concept from statistical mechanics
mechanics, the random variables range over complex projective space (or complex-valued projective Hilbert space), where the random variables are interpreted
Partition function (mathematics)
Partition_function_(mathematics)
Vector bundle existing over a Grassmannian
Picard group of the projective space. In Michael Atiyah's "K-theory", the tautological line bundle over a complex projective space is called the standard
Tautological_bundle
Metric on a complex projective space endowed with Hermitian form
Fubini–Study metric (IPA: /fubini-ʃtuːdi/) is a Kähler metric on a complex projective space CPn endowed with a Hermitian form. This metric was originally described
Fubini–Study_metric
Chinese mathematician
gradient steady Kähler-Ricci solitons on the total space of the canonical bundle over complex projective space which is complete and rotationally symmetric
Huai-Dong_Cao
Smooth manifold with an inner product on each tangent space
and real projective spaces with their standard metrics, along with hyperbolic space. The complex projective space, quaternionic projective space, and Cayley
Riemannian_manifold
Line with a point at infinity added
In projective geometry and mathematics more generally, a projective line is, roughly speaking, the extension of a usual line by a point called a point
Projective_line
Topics referred to by the same term
partial differential equations Complex projective space (CPn), the projective space with respect to the field of complex numbers Mallows's Cp, a statistic
CP
Mathematical manifold theory
de Rham complex. Let X be a smooth complex projective manifold, meaning that X is a closed complex submanifold of some complex projective space CPN. By
Hodge_theory
Characterises non-singular projective varieties amongst compact Kähler manifolds
non-singular projective varieties, over the complex numbers, amongst compact Kähler manifolds. In effect it says precisely which complex manifolds are
Kodaira_embedding_theorem
Algebraic variety containing an algebraic torus
of toric varieties are affine space, projective spaces, products of projective spaces and bundles over projective space. A precise definition is that
Toric_variety
Coordinate system used in projective geometry
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
Homogeneous_coordinates
Complex algebraic variety
In mathematics, a fake projective space is a complex algebraic variety that has the same Betti numbers as some projective space, but is not isomorphic
Fake_projective_space
Roughly, the number of k-dimensional holes on a topological surface
non-zero Betti numbers. An example is the infinite-dimensional complex projective space, with sequence 1, 0, 1, 0, 1, ... that is periodic, with period
Betti_number
Kind of complex manifold
sufficient conditions for a complex torus to be an algebraic variety; those that are varieties can be embedded into complex projective space, and are the abelian
Complex_torus
Type of vector space in math
projectivization of a Hilbert space, usually called the complex projective space. The exact nature of this Hilbert space is dependent on the system; for
Hilbert_space
Algebra in algebraic topology
this square is nontrivial. There is a similar computation on the complex projective space C P 6 {\displaystyle \mathbf {CP} ^{6}} , where the only non-trivial
Steenrod_algebra
Space with one dimension
In particular, if the field is the complex numbers C , {\displaystyle \mathbb {C} ,} then the complex projective line P 1 ( C ) {\displaystyle \mathbf
One-dimensional_space
Theorem in Riemannian geometry
1 , 4 ] {\displaystyle [1,4]} . The standard counterexample is complex projective space with the Fubini–Study metric; sectional curvatures of this metric
Sphere_theorem
2D surface which extends indefinitely
as the complex projective plane, and finite, such as the Fano plane. A projective plane is a 2-dimensional projective space. Not all projective planes
Plane_(mathematics)
Type of geometric transformation
Grassmannian. X {\displaystyle X} is a projective variety because it is a closed subvariety of a product of projective varieties. It comes with a natural
Blowing_up
the projective line (say the Riemann sphere C {\displaystyle \mathbb {C} } ∪ {∞} ≈ S2), its nth symmetric product ΣnC can be identified with complex projective
Symmetric product of an algebraic curve
Symmetric_product_of_an_algebraic_curve
constructed a stably essential phantom map from infinite-dimensional complex projective space to S 3 {\textstyle S^{3}} . The subject was analysed in the thesis
Phantom_map
multiplied give a non-zero result. For example, a complex projective space has cup-length equal to its complex dimension. In what follows, vertical bars around
Cohomology_ring
Form of differential geometry
the complex projective 4-space gives the value 6, while the best available upper bound for such a ratio of an arbitrary metric on both of these spaces is
Systolic_geometry
Locus of the zeros of a polynomial of degree two
points of the projective completion are the points of the projective space whose projective coordinates are zeros of P. So, a projective quadric is the
Quadric
Embedding a topological space into a compact space as a dense subset
(homeomorphic to) the complex projective line CP1, which in turn can be identified with a sphere, the Riemann sphere. Passing to projective space is a common tool
Compactification (mathematics)
Compactification_(mathematics)
algebraic geometry, a nodal surface is a surface in a (usually complex) projective space whose only singularities are nodes. A major problem about them
Nodal_surface
Algebraic structure in linear algebra
Real vector spaces and complex vector spaces are kinds of vector spaces based on different kinds of scalars: real numbers and complex numbers. Scalars
Vector_space
example a smooth complex hypersurface in complex projective space of dimension n will be a manifold of dimension 2(n − 1). A complex hyperplane does not
Complex_dimension
Direct summand of a free module (mathematics)
the property of lifting that carries over from free to projective modules: a module P is projective if and only if for every surjective module homomorphism
Projective_module
Topological concept in mathematics
two-dimensional manifolds. The real projective space RPn is a closed n-dimensional manifold. The complex projective space CPn is a closed 2n-dimensional manifold
Closed_manifold
Mathematical set with some added structure
subsets of projective space. Projective varieties were subsets defined by a set of homogeneous polynomials. At each point of the projective variety, all
Space_(mathematics)
Aspect of theoretical physics
unification of quantum theory with gravity. Twistor space is a three-dimensional complex projective space in which physical quantities appear as certain structural
Twistor_string_theory
Projective line over the real numbers
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
Real_projective_line
Manifold with Riemannian, complex and symplectic structure
dimensional reasons. There is a standard choice of Kähler metric on complex projective space C P n {\displaystyle \mathbb {CP} ^{n}} , the Fubini–Study metric
Kähler_manifold
Line through four points of a curve
The number of quadrisecants of a non-singular algebraic curve in complex projective space can be computed by a formula derived by Arthur Cayley. Quadrisecants
Quadrisecant
Isomorphism of projective spaces in geometry
In projective geometry, a homography is an isomorphism of projective spaces, induced by an isomorphism of the vector spaces from which the projective spaces
Homography
Japanese mathematician
{\displaystyle c_{1}(M)\geq (n+1)\alpha ,} then M must be biholomorphic to complex projective space. This, in combination with the Goldberg–Kobayashi result, forms
Shoshichi_Kobayashi
about 1978. The space of (possibly degenerate) conics in the complex projective plane CP2 can be identified with the complex projective space CP5 (since each
Steiner's_conic_problem
projective variety, defined over an algebraically closed field k, which has ample tangent bundle, then M must be isomorphic to the projective space defined
Frankel_conjecture
subcategories. Euclidean space, Rn n-sphere, Sn n-torus, Tn Real projective space, RPn Complex projective space, CPn Quaternionic projective space, HPn Flag manifold
List_of_manifolds
Topological space with only one nontrivial homotopy group
) {\displaystyle K(\mathbb {Z} ,1)} . The infinite-dimensional complex projective space C P ∞ {\displaystyle \mathbb {CP} ^{\infty }} is a model of K (
Eilenberg–MacLane_space
Generalization of algebraic variety
algebraic geometry focuses on projective or quasi-projective varieties over a field k {\displaystyle k} , most often over the complex numbers. Grothendieck developed
Scheme_(mathematics)
Space in mathematics and theoretical physics
complex projective 3-space C P 3 {\displaystyle \mathbb {CP} ^{3}} parametrizes such isomorphisms together with complex coordinates. Thus one complex
Twistor_space
Unsolved problem in geometry
subvarieties of X. A projective complex manifold is a complex manifold which can be embedded in complex projective space. Because projective space carries a Kähler
Hodge_conjecture
Zeuthen–Segre invariant I is an invariant of a projective surface found in a complex projective space which was introduced by Zeuthen (1871) and rediscovered
Zeuthen–Segre_invariant
Fiber bundle whose fibers are projective spaces
In mathematics, a projective bundle is a fiber bundle whose fibers are projective spaces. By definition, a scheme X over a Noetherian scheme S is a Pn-bundle
Projective_bundle
Complex manifold
other words a degree 5, dimension 3 hypersurface in 4-dimensional complex projective space, given by the equation V 5 + W 5 + X 5 + Y 5 + Z 5 = 0 {\displaystyle
Fermat_quintic_threefold
Mathematical space
Grassmannian was by Julius Plücker, who studied the set of projective lines in real projective 3-space, which is equivalent to G r 2 ( R 4 ) {\displaystyle
Grassmannian
theorem states that a projective complex analytic variety, i.e., a closed analytic subvariety of the complex projective space C P n {\displaystyle \mathbb
Complex_algebraic_variety
Universal construction of a complex Lie group from a real Lie group
space, so that P = Po. The homogeneous space GC / P has a complex structure, because P is a complex subgroup. The orbit in complex projective space is
Complexification_(Lie_group)
Complex three dimensional gauge theory
three-dimensional complex manifold is taken to be the three-dimensional complex projective space P 3 {\displaystyle \mathbb {P} ^{3}} , viewed as twistor space. The
Six-dimensional holomorphic Chern–Simons theory
Six-dimensional_holomorphic_Chern–Simons_theory
Riemannian manifold with SU(n) holonomy
{\displaystyle n} , the zero set, in the homogeneous coordinates of the complex projective space C P n + 1 {\displaystyle \mathbb {CP} ^{n+1}} , of a non-singular
Calabi–Yau_manifold
Type of topological space
mathematics, and specifically in topology, a CW complex (also cellular complex or cell complex) is a topological space that is built by gluing together topological
CW_complex
American mathematician
the limit of codimension-q algebraic cycles in complex projective n-space Pn is a finite product of spaces which classify integer cohomology in degrees
H._Blaine_Lawson
Generalized sphere of dimension n (mathematics)
( 1 ) {\displaystyle \operatorname {U} (1)} -bundle over the complex projective space C P 2 {\displaystyle \mathbf {CP} ^{2}} . SO ( 6 ) / SO
N-sphere
Mathematical space with two coordinates
two-dimensional complex space – such as the two-dimensional complex coordinate space, the complex projective plane, or a complex surface – has two complex dimensions
Two-dimensional_space
Generalizations of codimension-1 subvarieties of algebraic varieties
system of D. A projective linear subspace of this projective space is called a linear system of divisors. One reason to study the space of global sections
Divisor_(algebraic_geometry)
Riemannian manifold which satisfies vacuum Einstein equations
k=n-1} . Hyperbolic space with the canonical metric is Einstein with k = − ( n − 1 ) {\displaystyle k=-(n-1)} . Complex projective space, C P n {\displaystyle
Einstein_manifold
COMPLEX PROJECTIVE-SPACE
COMPLEX PROJECTIVE-SPACE
Girl/Female
German American
Protective.
Surname or Lastname
English
English : habitational name, probably from Comley in Shropshire or Combley on the Isle of Wight; both are named with Old English cumb ‘valley’ + lēah ‘woodland clearing’.
Girl/Female
Muslim/Islamic
Protective angel
Boy/Male
Christian & English(British/American/Australian)
Protective Friend
Girl/Female
Indian
Protective Angel
Girl/Female
Irish
Protective.
Boy/Male
German
Protective
Surname or Lastname
English (Yorkshire)
English (Yorkshire) : habitational name from any of various places called Copley, for example in County Durham, Staffordshire, and Yorkshire, from the Old English personal name Coppa (apparently a byname for a tall man) or from copp ‘hilltop’ + lēah ‘woodland clearing’.
Boy/Male
Polish
Protective shield.
Boy/Male
German
Protective
Girl/Female
Celtic, French, German, Irish
Strong; Protective
Boy/Male
Arabic, Indian, Muslim, Sindhi
Protective; Safety
Boy/Male
British, English, Netherlands
Protective
Girl/Female
Muslim
Protective Angel
Girl/Female
Indian
Protective Angel
Girl/Female
German, Swedish
Protective Victory
Surname or Lastname
English
English : unexplained.Americanized form of German Koppler.
Girl/Female
Muslim/Islamic
Protective angel
Girl/Female
Muslim
Protective Angel
Girl/Female
Irish
Protective.
COMPLEX PROJECTIVE-SPACE
COMPLEX PROJECTIVE-SPACE
Girl/Female
English
Feminine of nickname for Joseph and Jude.
Male
Hebrew
(צִבְעï‹×Ÿ) Hebrew name TSIBOWN means "versi-colored." In the bible, this is the name of the father of Anah and a son of Seir.
Girl/Female
English American
A. In the 1950s, Christine was one of the three most common feminine names in Britain. Famous...
Boy/Male
Arabic, Muslim
Defender of the State
Male
Italian
Variant spelling of Italian Ulderico, UDALRICO means "merciful ruler."
Boy/Male
Hindi
Beginning.
Girl/Female
American, British, English
At the Elder Tree
Boy/Male
Greek
A Titan.
Boy/Male
Tamil
Chandragupt | சநà¯à®¤à¯à®°à®•à¯à®ªà¯à®¤
Name of ancient king
Boy/Male
Muslim
Journey
COMPLEX PROJECTIVE-SPACE
COMPLEX PROJECTIVE-SPACE
COMPLEX PROJECTIVE-SPACE
COMPLEX PROJECTIVE-SPACE
COMPLEX PROJECTIVE-SPACE
a.
Pertaining to projection, or to a projectile.
imp. & p. p.
of Couple
a.
Bringing into being; causing to exist; producing; originative; as, an age productive of great men; a spirit productive of heroic achievements.
a.
Caused or imparted by impulse or projection; impelled forward; as, projectile motion.
imp. & p. p.
of Comply
a.
Complex, complicated.
n.
Being within view or consideration, as a future event or contingency; relating to the future: expected; as, a prospective benefit.
a.
Repeatedly compound; made up of complex constituents.
imp. & p. p.
of Compile
a.
Finished; ended; concluded; completed; as, the edifice is complete.
adv.
In a complex manner; not simply.
n.
One who couples; that which couples, as a link, ring, or shackle, to connect cars.
a.
Not complex; uncompounded; simple.
n.
A complex; an aggregate of parts; a complication.
n.
The representation of something; delineation; plan; especially, the representation of any object on a perspective plane, or such a delineation as would result were the chief points of the object thrown forward upon the plane, each in the direction of a line drawn through it from a given point of sight, or central point; as, the projection of a sphere. The several kinds of projection differ according to the assumed point of sight and plane of projection in each.
a.
Intricate; entangled; complicated; complex.
n.
Composed of two or more parts; composite; not simple; as, a complex being; a complex idea.
a.
Projecting or impelling forward; as, a projectile force.
a.
See Couple-close.
a.
Having the quality or power of producing; yielding or furnishing results; as, productive soil; productive enterprises; productive labor, that which increases the number or amount of products.