Results 51 to 60 of about 8,504,062 (361)

Decoding of Projective Reed-Muller Codes by Dividing a Projective Space into Affine Spaces

open access: yes, 2015
A projective Reed-Muller (PRM) code, obtained by modifying a (classical) Reed-Muller code with respect to a projective space, is a doubly extended Reed-Solomon code when the dimension of the related projective space is equal to 1.
Matsui, Hajime, Nakashima, Norihiro
core   +1 more source

The projective space

open access: yesDuke Mathematical Journal, 1950
The most striking feature of projective geometry is the principle of duality: If in a proposition about the projective space (the projective plane) we interchange points and planes (points and lines) we obtain a valid proposition. It thus seems natural to ask for a self-dual foundation of the theories in the sense that for every postulate the above ...
openaire   +2 more sources

Fuzzy collineations of 3-dimensional fuzzy projective space from 4-dimensional fuzzy vector space

open access: yesAIMS Mathematics
In this paper, the fuzzy counterparts of the collineations defined in classical projective spaces are defined in a 3-dimensional fuzzy projective space derived from a 4-dimensional fuzzy vector space. The properties of fuzzy projective space $ (\lambda, \
Elif Altintas Kahriman
doaj   +1 more source

Moduli of mathematical instanton vector bundles with odd on projective space [PDF]

open access: yes, 2011
We study the moduli space of mathematical instanton vector bundles of rank 2 with second Chern class on the projective space , and prove the irreducibility of for arbitrary odd .
A. Tikhomirov
semanticscholar   +1 more source

Immersions of real projective spaces into complex projective spaces [PDF]

open access: yesHiroshima Mathematical Journal, 1987
This paper achieves a classification up to regular homotopy of immersions from a real projective space \(P^ n({\mathbb{R}})\) into a complex projective space \(P^ m({\mathbb{C}})\). Calculations with characteristic classes show that, for \(n>m\), any such immersion is nullhomotopic.
openaire   +2 more sources

Projective coordinates and projective space limit [PDF]

open access: yesNuclear Physics B, 2008
16 pages, v2: modified the section 2.1 clarifying the difference from IW contraction, added notes & references, version to appear in Nuclear Physics ...
Machiko Hatsuda   +2 more
openaire   +2 more sources

Fibers of rational maps and Rees algebras of their base ideals

open access: yesTạp chí Khoa học Đại học Huế: Khoa học Tự nhiên, 2020
We consider a ratinonal map $\phi$ from m-dimensional projective space to n-dimensional projective space that is a parameterization of m-dimensional variety. Our main goal is to study the (m-1)-dimensional fibers of $\phi$ in relation with the m-th local
Tran Quang Hoa, Ho Vu Ngoc Phuong
doaj   +1 more source

A method to compute Segre classes of subschemes of projective space [PDF]

open access: yes, 2011
We present a method to compute the degrees of the Segre classes of a subscheme of complex projective space. The method is based on generic residuation and intersection theory.
David Eklund   +2 more
semanticscholar   +1 more source

On the Projective Algebra of Randers Metrics of Constant Flag Curvature

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2011
The collection of all projective vector fields on a Finsler space (M,F) is a finite-dimensional Lie algebra with respect to the usual Lie bracket, called the projective algebra denoted by p(M,F) and is the Lie algebra of the projective group P(M,F).
Mehdi Rafie-Rad, Bahman Rezaei
doaj   +1 more source

Features of the geometry of the five-dimensional pseudo-Euclidean space of index two [PDF]

open access: yesE3S Web of Conferences
The article is devoted to the study of the geometry of subspaces of a five-dimensional pseudo-Euclidean space. This space is attractive because all kinds of semi-Euclidean, semi-pseudo-Euclidean, hyperbolic three-dimensional spaces with projective ...
Artikbaev A., Mamadaliyev B.M.
doaj   +1 more source

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