Results 31 to 40 of about 763,072 (344)

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

A geometric model of linear fractional transformations

open access: yesДифференциальная геометрия многообразий фигур, 2022
A model of linear fractional transformations of the complex plane in the form of points of the complex three-dimensional projective space without a linear “forbidden” quadric is presented.
S.V. Matsievsky
doaj   +1 more source

Some remarks on a theorem of Green

open access: yesPracì Mìžnarodnogo Geometričnogo Centru, 2022
The purpose of this paper is to study holomorphic curves f from C to C3 avoiding four complex hyperplanes and a real subspace of real dimension four in C3.
Abdessami ben Hmida Jalled, Fathi Haggui
doaj   +1 more source

Dynamics of real projective transformations

open access: yesApplied General Topology, 2018
The dynamics of a projective transformation on a real projective space are studied in this paper. The two main aspects of these transformations that are studied here are the topological entropy and the zeta function.
Sharan Gopal, Srikanth Ravulapalli
doaj   +1 more source

On the nonimmersion of products of real projective spaces [PDF]

open access: yesTransactions of the American Mathematical Society, 1990
In this paper we utilize B P ∗ ( ) B{P^*}(\;) , a generalized cohomology theory associated with the Brown-Peterson spectrum to prove a nonimmersion theorem for products of real projective spaces.
Hyun-Jong Song, W. Stephen Wilson
openaire   +1 more source

The homotopy of spaces of maps between real projective spaces [PDF]

open access: bronzeJournal of the Mathematical Society of Japan, 2006
We study the homotopy groups of spaces of continuous maps between real projective spaces and we generalize the results given in [5], [8] and [12]. In particular, we determine the rational homotopy types of these spaces and compute their fundamental groups explicitly.
Kohhei Yamaguchi
openalex   +4 more sources

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

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

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   +3 more sources

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