Results 81 to 90 of about 401,077 (355)

Galois theory and projective geometry [PDF]

open access: yesarXiv, 2011
We explore connections between birational anabelian geometry and abstract projective geometry. One of the applications is a proof of a version of the birational section conjecture.
arxiv  

Applications of Conformal Geometric Algebra to Transmission Line Theory

open access: yesIEEE Access, 2017
In this paper, we present the application of a projective geometry tool known as conformal geometric algebra (CGA) to transmission line theory. Explicit relationships between the Smith Chart, Riemann Sphere, and CGA are developed to illustrate the ...
Alex Arsenovic
doaj   +1 more source

Strictly nef vector bundles and characterizations of ℙn

open access: yesComplex Manifolds, 2021
In this note, we give a brief exposition on the differences and similarities between strictly nef and ample vector bundles, with particular focus on the circle of problems surrounding the geometry of projective manifolds with strictly nef bundles.
Liu Jie, Ou Wenhao, Yang Xiaokui
doaj   +1 more source

Integrable systems in projective differential geometry

open access: yes, 1999
Some of the most important classes of surfaces in projective 3-space are reviewed: these are isothermally asymptotic surfaces, projectively applicable surfaces, surfaces of Jonas, projectively minimal surfaces, etc.
Ferapontov, E. V.
core   +1 more source

Analytical model of multiview autostereoscopic 3D display with a barrier or a lenticular plate

open access: yesJournal of Information Display, 2018
A geometric model of an autostereoscopic 3D display is described herein. This model is based on the geometry of typical display devices and on the projective transformations that provide periodicity in the projective space.
Vladimir Saveljev, Irina Palchikova
doaj   +1 more source

Tetrahedral quartics in Projective Space [PDF]

open access: yesarXiv, 2012
We study tetrahedral quartics in projective space. We address their projective geometry, Neron-Severi lattice and automorphism group.
arxiv  

On the projective Ricci curvature [PDF]

open access: yesarXiv, 2020
The notion of the Ricci curvature is defined for sprays on a manifold. With a volume form on a manifold, every spray can be deformed to a projective spray. The Ricci curvature of a projective spray is called the projective Ricci curvature. In this paper, we introduce the notion of projectively Ricci-flat sprays.
arxiv  

How Useful is Projective Geometry? [PDF]

open access: yesComputer Vision and Image Understanding, 1997
In this response, we will weigh two different approaches to shape recognition. On the one hand we have the use of restricted camera models as advocated in the paper of Pizlo et. al. to give a closer approximation to real calibrated cameras. The alternative approach is to use a full projective camera model and take advantage of the machinery of ...
Gros, P.   +3 more
openaire   +6 more sources

Determination of the characteristic parameters in the special collinear space in the general case [PDF]

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering, 2007
The projective space consists of the finitely and infinitely distant elements. The special collinear spaces in the general case, are set with five pairs of biunivocally associated points, so the quadrangle in the first space obtained by the three ...
Krasić Šonja, Marković Miroslav
doaj   +1 more source

Classification of toric projective varieties up to projective automorphisms [PDF]

open access: yesarXiv, 2019
Toric subvarieties of projective space are classified up to projective automorphisms.
arxiv  

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