Results 31 to 40 of about 4,276,702 (282)

A Comprehensive Survey on Parallel Submanifolds in Riemannian and Pseudo-Riemannian Manifolds

open access: yesAxioms, 2019
A submanifold of a Riemannian manifold is called a parallel submanifold if its second fundamental form is parallel with respect to the van der Waerden−Bortolotti connection.
Bang-Yen Chen
doaj   +1 more source

Totally real submanifolds of a complex space form

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
Totally real submanifolds of a complex space form are studied. In particular, totally real submanifolds of a complex number space with parallel mean curvature vector are classified.
U-Hang Ki, Young Ho Kim
doaj   +1 more source

K\"ahler immersions of K\"ahler manifolds into complex space forms [PDF]

open access: yes, 2017
The study of K\"ahler immersions of a given real analytic K\"ahler manifold into a finite or infinite dimensional complex space form originates from the pioneering work of Eugenio Calabi [10].
Loi, Andrea, Zedda, Michela
core   +2 more sources

Note on the asymptotic structure of Kerr-Schild form

open access: yesJournal of High Energy Physics, 2022
The Kerr-Schild form provides a natural way of realizing the classical double copy that relates exact solutions in general relativity to exact solutions in gauge theory. In this paper, we examine the asymptotic structure of Kerr-Schild form.
Pujian Mao, Weicheng Zhao
doaj   +1 more source

Parallel submanifolds of complex space forms II [PDF]

open access: yesNagoya Mathematical Journal, 1983
This is a continuation of Part I, which appeared in this journal.In the previous paper I we have defined the following notions: orthogonal Jordan triple system (OJTS), orthogonal symmetric graded Lie algebra (OSGLA), orthogonal Jordan algebra (OJA), Hermitian symmetric graded Lie algebra (HSGLA).
openaire   +7 more sources

Feynman’s iϵ prescription, almost real spacetimes, and acceptable complex spacetimes

open access: yesJournal of High Energy Physics, 2022
Feynman’s iϵ prescription for quantum field theoretic propagators has a quite natural reinterpretation in terms of a slight complex deformation of the Minkowski space-time metric. Though originally a strictly flat-space result, once reinterpreted in this
Matt Visser
doaj   +1 more source

Deformed diagonal harmonic polynomials for complex reflection groups [PDF]

open access: yes, 2010
We introduce deformations of the space of (multi-diagonal) harmonic polynomials for any finite complex reflection group of the form W=G(m,p,n), and give supporting evidence that this space seems to always be isomorphic, as a graded W-module, to the ...
Bergeron, François   +2 more
core   +5 more sources

Product complex submanifolds on of indefinite complex space forms

open access: yesRocky Mountain Journal of Mathematics, 1988
An analogue of the Segre imbedding for the indefinite complex projective (and hyperbolic) space is constructed. The paper then deals with isometric holomorphic immersions of a product of two complete indefinite Kähler manifolds into a complex projective space.
Ikawa, Toshihiko   +2 more
openaire   +2 more sources

Application of the Complex Moments for Selection of an Optimal Sensor

open access: yesSensors, 2021
In the first time we apply the statistics of the complex moments for selection of an optimal pressure sensor (from the available set of sensors) based on their statistical/correlation characteristics.
Raoul R. Nigmatullin   +1 more
doaj   +1 more source

Symplectic maps of complex domains into complex space forms

open access: yesJournal of Geometry and Physics, 2008
to appear in Journal of Geometry and ...
LOI, ANDREA, ZUDDAS, FABIO
openaire   +5 more sources

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