Results 21 to 30 of about 4,910 (167)

Cycles in projective spaces [PDF]

open access: yesJournal of Geometry, 2013
6 ...
Aceves, Elaina   +3 more
openaire   +2 more sources

Chow transformation of coherent sheaves

open access: yesComplex Manifolds, 2023
We define a dual of the Chow transformation of currents on any complex projective manifold. This integral transformation is a factor of a left inverse of the Chow transformation and its composition with the Chow transformation is a right inverse of a ...
Méo Michel
doaj   +1 more source

Curvature tensor of connection in principal bundle of Cartan's projective connection space

open access: yesДифференциальная геометрия многообразий фигур, 2019
We considered Cartan's projective connection space with structure equations generalizing the structure equations of the projective space and the condition of local projectivity (this condition is an analogue to the equiprojectivity condition in the ...
K. Bashashina
doaj   +1 more source

Brillouin Klein bottle from artificial gauge fields

open access: yesNature Communications, 2022
Topological states are exploited based on crystalline symmetry, but under artificial gauge fields, symmetries may satisfy projective algebras, which remains less studied.
Z. Y. Chen   +2 more
doaj   +1 more source

Cofinitely and co-countably projective spaces

open access: yesApplied General Topology, 2002
We show that X is cofinitely projective if and only if it is a finite union of Alexandroff compactatifications of discrete spaces. We also prove that X is co-countably projective if and only if X admits no disjoint infinite family of uncountable cozero ...
Pablo Mendoza Iturralde   +1 more
doaj   +1 more source

On projective coordinate spaces

open access: yesFilomat, 2015
In the present study, an (n+1)-dimensional module over the local ringK = Mmm(R) is constructed. Further, an n-dimensional projective coordinate space over this module is constructed with the help of equivalence classes. The points and lines of this space are determined and the points are classified.
Erdogan, FATMA, Ciftci, Suleyman
openaire   +4 more sources

Images of the Scenic Space between Reality and Illusion. Projective Transformations of the Scene in the Renaissance Theatre

open access: yesProceedings, 2017
This study focuses on an analysis of perceiving the infinite “solid images” derived from the projective transformations of space in a relief perspective, with particular reference to Renaissance theatre scenery.
Leonardo Baglioni, Marta Salvatore
doaj   +1 more source

Metrizations of Projective Spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1957
A two-dimensional G-space,1 in which the geodesic through two distinct points is unique, is either homeomorphic to the plane E2 and all geodesics are isometric to a straight line, or it is homeomorphic to the projective plane p2 and all geodesics are isometric to the same circle, see [1, ??10 and 31]. Two problems arise in either case: (1) To determine
openaire   +1 more source

Affine Spaces within Projective Spaces [PDF]

open access: yesResults in Mathematics, 1999
We endow the set of complements of a fixed subspace of a projective space with the structure of an affine space, and show that certain lines of such an affine space are affine reguli or cones over affine reguli. Moreover, we apply our concepts to the problem of describing dual spreads. We do not assume that the projective space is finite-dimensional or
Blunck, Andrea, Havlicek, Hans
openaire   +2 more sources

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