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Displaying 281 – 300 of 729

Infinitesimal automorphisms and deformations of parabolic geometries

Andreas Čap (2008)

Journal of the European Mathematical Society

We show that infinitesimal automorphisms and infinitesimal deformations of parabolic geometries can be nicely described in terms of the twisted de Rham sequence associated to a certain linear connection on the adjoint tractor bundle. For regular normal geometries, this description can be related to the underlying geometric structure using the machinery of BGG sequences. In the locally flat case, this leads to a deformation complex, which generalizes the well known complex for locally conformally...

Infinitesimal automorphisms of some G-structures

Robert Wolak (1983)

Annales Polonici Mathematici

Infinitesimal symplectic relations and generalized hamiltonian dynamics

Maria Rosa Menzio, W. M. Tulczyjew (1978)

Annales de l'I.H.P. Physique théorique

Infinitesimal Variation Of Hyperspaces Of A GF Structure Mainfold

Jaya Pant, Asha Srivastava (1982)

Publications de l'Institut Mathématique

Instability of the nearly-Kähler six-sphere.

C.M. Wood (1993)

Journal für die reine und angewandte Mathematik

Integrability of tensor structures of electromagnetic type.

Hernando, J.M., Reyes, E., Gadea, P.M. (1985)

Publications de l'Institut Mathématique. Nouvelle Série

Introduction à la géométrie hyperbolique

Jacques Lafontaine (1991)

Séminaire de théorie spectrale et géométrie

Introduction aux géométries de Hilbert

Constantin Vernicos (2004/2005)

Séminaire de théorie spectrale et géométrie

Invariant cohomology of the Poisson Lie algebra of a symplectic manifold

Marc De Wilde, Pierre B. A. Lecomte, Dominique Mélotte (1985)

Commentationes Mathematicae Universitatis Carolinae

Invariant $f$ -structures on the flag manifolds $SO (n) / SO (2) \times SO (n - 3)$ .

Balashchenko, Vitaly V., Sakovich, Anna (2006)

International Journal of Mathematics and Mathematical Sciences

Invariant metric f-structures on specific homogeneous reductive spaces.

A. Sakovich (2008)

Extracta Mathematicae

Invariant operations on manifolds with almost Hermitian symmetric structures. II: Normal Cartan connections.

Čap, A., Slovák, J., Souček, V. (1997)

Acta Mathematica Universitatis Comenianae. New Series

Invariant operators on manifolds with almost Hermitian symmetric structures. I: Invariant differentiation.

Čap, A., Slovák, J., Souček, V. (1997)

Acta Mathematica Universitatis Comenianae. New Series

Invariant structures on the 6-dimensional generalized Heisenberg group

Vitaly V. Balashchenko (2011)

Kragujevac Journal of Mathematics

Invariant submanifolds of codimension 2 of almost contact manifolds

Samuel I. Goldberg (1971)

Annali della Scuola Normale Superiore di Pisa - Classe di Scienze

Invariant submanifolds of Sasakian manifolds.

Karadağ, H.Bayram, Atçeken, Mehmet (2007)

Balkan Journal of Geometry and its Applications (BJGA)

Invariant vector fields of Hamiltonians

Jacek Dębecki (1998)

Archivum Mathematicum

A complete classification of natural transformations of Hamiltonians into vector fields on symplectic manifolds is given herein.

Invariants homotopiques attachés aux fibrés symplectiques

Pierre Dazord (1979)

Annales de l'institut Fourier

On donne une construction géométrique d’invariants généralisant la classe de Maslov-Arnold d’une immersion lagrangienne dans un fibré cotangent et l’indice de Maslov-Arnold-Leray d’une immersion lagrangienne $2 q$ -orientée dans $R^{n} \oplus R^{n *}$ : la classe de Maslov-Arnold universelle d’un fibré symplectique et l’indice de Maslov-Arnold-Leray d’un fibré $q$ -symplectique, c’est-à-dire dont le groupe structural est le revêtement à $q$ feuillets de $S p (n)$ . Tout ceci relève d’une situation géométrique générale dans laquelle s’introduisent...

Invariants in contact topology.

Eliashberg, Yakov (1998)

Documenta Mathematica

Invariants of complex structures on nilmanifolds

Edwin Alejandro Rodríguez Valencia (2015)

Archivum Mathematicum

Let $(N, J)$ be a simply connected $2 n$ -dimensional nilpotent Lie group endowed with an invariant complex structure. We define a left invariant Riemannian metric on $N$ compatible with $J$ to be minimal, if it minimizes the norm of the invariant part of the Ricci tensor among all compatible metrics with the same scalar curvature. In [7], J. Lauret proved that minimal metrics (if any) are unique up to isometry and scaling. This uniqueness allows us to distinguish two complex structures with Riemannian data, giving...

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