Results 31 to 40 of about 14,606,458 (293)

Complex Hypersurfaces in an Indefinite Complex Space Form

open access: yesTokyo Journal of Mathematics, 1987
Let M be a complex hypersurface of index 2s in an \((n+1)\)-dimensional indefinite complex space form of constant holomorphic sectional curvature c(\(\neq 0)\) and of index \(2(s+a),\) where \(a=0\) or 1. The authors prove that M is Einstein if M satisfies \(R(X,Y)\cdot S=0\) where R and S denote the curvature tensor and the Ricci tensor, respectively.
AIYAMA, Reiko   +3 more
openaire   +2 more sources

Quantum theory of reactive scattering in phase space [PDF]

open access: yes, 2010
We review recent results on quantum reactive scattering from a phase space perspective. The approach uses classical and quantum versions of normal form theory and the perspective of dynamical systems theory.
Brandas, E   +17 more
core   +1 more source

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

Real hypersurfaces with constant totally real sectional curvature in a complex space form [PDF]

open access: yes, 2000
summary:We characterize real hypersurfaces with constant holomorphic sectional curvature of a non flat complex space form as the ones which have constant totally real sectional ...
Pérez, Juan de Dios   +2 more
core   +1 more source

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

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

Do evolutionary algorithm dynamics create complex network structures? [PDF]

open access: yes, 2021
This paper presents a novel method for visualizing the dynamics of evolutionary algorithms in the form of complex networks. We discuss the analogy between individuals in populations in an arbitrary evolutionary algorithm and vertices of a complex network,
Jašek, Roman   +3 more
core   +1 more source

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

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

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