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projective space (all weights 1)
URI:
https://gptkb.org/entity/projective_space_(all_weights_1)
GPTKB entity
Statements (32)
Predicate
Object
gptkbp:instanceOf
gptkb:geometry
gptkbp:alsoKnownAs
ordinary projective space
gptkbp:automorphismGroup
projective linear group
gptkbp:builtBy
gptkb:Vector
gptkbp:cohomologyRing
Z[x]/(x^{n+1})
gptkbp:dimensions
n
gptkbp:example
gptkb:real_projective_plane
complex projective line
gptkbp:field
complex numbers
real numbers
arbitrary field
gptkbp:firstChernClass
n+1
gptkbp:fundamentalGroup
trivial (for n>1, over complex numbers)
gptkbp:hasSpecialCase
gptkb:weighted_projective_space
gptkbp:homogeneousCoordinates
yes
gptkbp:homotopyType
wedge of spheres
https://www.w3.org/2000/01/rdf-schema#label
projective space (all weights 1)
gptkbp:isQuotientOf
scalar multiplication
vector space minus zero vector
gptkbp:notation
P^n
[CP^n
gptkbp:property
gptkb:Riemannian_manifold
compact
connected
simply connected (for n>1, over complex numbers)
gptkbp:relatedTo
Grassmannian
flag variety
gptkbp:usedIn
gptkb:algebraic_geometry
gptkb:geometry
complex geometry
gptkbp:bfsParent
gptkb:weighted_projective_space
gptkbp:bfsLayer
7