Results 11 to 20 of about 118,104 (281)

Extensions of maps to the projective plane [PDF]

open access: yes, 2005
It is proved that for a 3-dimensional compact metrizable space X the infinite real projective space is an absolute extensor of X if and only if the real projective plane is an absolute extensor of X.Comment: Published by Algebraic and Geometric Topology ...
Dydak, Jerzy, Levin, Michael
core   +1 more source

Totally real submanifolds in a complex projective space

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1999
In this paper, we establish the following result: Let M be an n-dimensional complete totally real minimal submanifold immersed in CPn with Ricci curvature bounded from below.
Liu Ximin
doaj   +1 more source

Graphic representation of a triaxial ellipsoid by means of a sphere in general collinear spaces [PDF]

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering, 2011
For graphic representation of the projective creations, such as the quadrics (II degree surfaces) in projective, general collinear spaces, it is necessary to firstly determine the characteristic parameters, such as: vanishing planes, axes and centers ...
Krasić Sonja, Marković Biserka
doaj   +1 more source

Quantum description of angles in the plane

open access: yesActa Polytechnica, 2022
The real plane with its set of orientations or angles in [0, π) is the simplest non trivial example of a (projective) Hilbert space and provides nice illustrations of quantum formalism.
Roberto Beneduci   +2 more
doaj   +1 more source

A 3-Manifold with no Real Projective Structure [PDF]

open access: yes, 2015
We show that the connected sum of two copies of real projective 3-space does not admit a real projective structure. This is the first known example of a connected 3-manifold without a real projective structure.Comment: Minor corrections suggested by ...
Cooper, Daryl, Goldman, William
core   +2 more sources

On certain real hypersurfaces of quaternionic projective space

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1991
We classify certain real hypersurfaces ot a quaternionic projective space satisfying the condition σ(R(X,Y)SZ)=0.
Juan De Dios Perez, Florentino G. Santos
doaj   +1 more source

Moduli Spaces of Lumps on Real Projective Space [PDF]

open access: yes, 2015
Harmonic maps that minimize the Dirichlet energy in their homotopy classes are known as lumps. Lump solutions on real projective space are explicitly given by rational maps subject to a certain symmetry requirement.
Abera A. Muhamed   +6 more
core   +2 more sources

Real hypersurfaces of type A in quarternionic projective space

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1997
In this paper, under certain conditions on the orthogonal distribution 𝒟, we give a characterization of real hypersurfaces of type A in quaternionic projective space QPm.
U-Hang Ki   +2 more
doaj   +1 more source

Holography for N $$ \mathcal{N} $$ = 4 on RP $$ \mathbbm{RP} $$ 4

open access: yesJournal of High Energy Physics, 2023
We propose a holographic description of N $$ \mathcal{N} $$ = 4 super Yang-Mills on the four-dimensional real projective space RP $$ \mathbbm{RP} $$ 4.
João Caetano, Leonardo Rastelli
doaj   +1 more source

Chirality of Real Non-singular Cubic Fourfolds and Their Pure Deformation Classification [PDF]

open access: yes, 2019
In our previous works we have classified real non-singular cubic hypersurfaces in the 5-dimensional projective space up to equivalence that includes both real projective transformations and continuous variations of coefficients preserving the ...
Finashin, Sergey, Kharlamov, Viatcheslav
core   +4 more sources

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