Zobrazeno 1 - 10
of 51
pro vyhledávání: '"IANUŞ, STERE"'
Publikováno v:
Abh. Math. Semin. Univ. Hamb., Volume 81, Number 1/ April 2011, 101-114
In this paper we obtain the structure equation of a contact-complex Riemannian submersion and give some applications of this equation in the study of almost cosymplectic manifolds with Kaehler fibres.
Comment: Abh. Math. Semin. Univ. Hamb., to a
Comment: Abh. Math. Semin. Univ. Hamb., to a
Externí odkaz:
http://arxiv.org/abs/1102.1570
Publikováno v:
Mediterranean Journal of Math. 9(2012), 105-128
Mixed 3-structures are odd-dimensional analogues of paraquaternionic structures. They appear naturally on lightlike hypersurfaces of almost paraquaternionic hermitian manifolds. We study invariant and anti-invariant submanifolds in a manifold endowed
Externí odkaz:
http://arxiv.org/abs/1009.6209
Publikováno v:
Bull. Math. Soc. Sci. Math. Roumanie, vol. 56 (2013), no. 2, 135-150
We obtain geometric characterizations of isospectral minimal Riemannian Legendre foliations on compact Sasakian manifolds of constant $\phi$-sectional curvature.
Comment: 14 pages
Comment: 14 pages
Externí odkaz:
http://arxiv.org/abs/1009.3194
Publikováno v:
Cent. Eur. J. Math. 8(4) 2010, 735-753
In this paper we introduce paraquaternionic CR-submanifolds of almost paraquaternionic hermitian manifolds and state some basic results on their differential geometry. We also study a class of semi-Riemannian submersions from paraquaternionic CR-subm
Externí odkaz:
http://arxiv.org/abs/1003.0915
Publikováno v:
SIGMA 5 (2009), 022, 12 pages
We show the existence of conformal Killing-Yano tensors on a manifold endowed with a mixed 3-Sasakian structure.
Externí odkaz:
http://arxiv.org/abs/0902.3968
Publikováno v:
Phys.Atom.Nucl.73:1925-1930,2010
Higher order symmetries corresponding to Killing tensors are investigated. The intimate relation between Killing-Yano tensors and non-standard supersymmetries is pointed out. In the Dirac theory on curved spaces, Killing-Yano tensors generate Dirac t
Externí odkaz:
http://arxiv.org/abs/0811.3478
Publikováno v:
Houston Journal of Mathematics, 33 (3) 2008, 739-751
The purpose of this paper is to study the canonical foliations of a quaternion CR-submanifold of a quaternion K\"{a}hler manifold.
Comment: 10 pages
Comment: 10 pages
Externí odkaz:
http://arxiv.org/abs/0707.3812
Autor:
Ianus, Stere, Vilcu, Gabriel Eduard
Publikováno v:
Int. J. Geom. Methods Mod. Phys. 5, No. 6, 893-903 (2008)
In this paper we give some examples of almost para-hyperhermitian structures on the tangent bundle of an almost product manifold, on the product manifold $M\times\mathbb{R}$, where $M$ is a manifold endowed with a mixed 3-structure and on the circle
Externí odkaz:
http://arxiv.org/abs/0707.3360
Publikováno v:
Tokyo Journal of Mathematics, vol 29 (2006), No. 1, 247-270
Let $(M^{n},g)$ be a closed, connected, oriented, $C^{\infty}$, Riemannian, n-manifold with a transversely oriented foliation $\boldkey F$. We show that if $\lbrace X,Y \rbrace$ are basic vector fields, the leaf component of $[X,Y]$, $\Cal{V}[X,Y]$,
Externí odkaz:
http://arxiv.org/abs/math/0508164
Autor:
Baditoiu, Gabriel, Ianus, Stere
Publikováno v:
Rendiconti del Circolo Matematico di Palermo, Tomo LI (2002), 249-276
We get obstructions to existence of semi-Riemannian submersions with totally umbilic fibres.
Comment: 19 pages
Comment: 19 pages
Externí odkaz:
http://arxiv.org/abs/math/0206014