Results 21 to 30 of about 432 (34)

Singularities of spherical surface in R4

open access: yesOpen Mathematics
In this article, we mainly study the geometric properties of spherical surface of a curve on a hypersurface Σ\Sigma in four-dimensional Euclidean space.
Liu Haiming, Hua Yuefeng, Li Wanzhen
doaj   +1 more source

Formes de contact ayant le même champ de Reeb [PDF]

open access: yes, 2011
2000 Mathematics Subject Classification: 37J55, 53D10, 53D17, 53D35.In this paper, we study contact forms on a 3-manifold having a common Reeb vector field R.
Aggoun, Saad
core  

Canonical contact structures on some singularity links

open access: yes, 2014
We identify the canonical contact structure on the link of a simple elliptic or cusp singularity by drawing a Legendrian handlebody diagram of one of its Stein fillings.
Akbulut   +25 more
core   +1 more source

Adapted complex tubes on the symplectization of pseudo-Hermitian manifolds

open access: yes, 2010
Let $(M,\omega)$ be a pseudo-Hermitian space of real dimension $2n+1$, that is $\RManBase$ is a $\CR-$manifold of dimension $2n+1$ and $\omega$ is a contact form on $M$ giving the Levi distribution $HT(M)\subset TM$.
Tomassini, Giuseppe, Venturini, Sergio
core   +1 more source

On symplectic fillings

open access: yes, 2004
In this note we make several observations concerning symplectic fillings. In particular we show that a (strongly or weakly) semi-fillable contact structure is fillable and any filling embeds as a symplectic domain in a closed symplectic manifold. We also
Eliashberg   +9 more
core   +4 more sources

A class of 3-dimensional contact metric manifolds [PDF]

open access: yes, 2012
We classify the contact metric 3-manifolds that satisfy ||grad{\lambda}||=1 and \nabla_{{\xi}}{\tau}=2a{\tau}{\phi}.Comment: 12 pages ...
Erken, Irem Küpeli, Murathan, Cengizhan
core  

Trapped Reeb orbits do not imply periodic ones

open access: yes, 2013
We construct a contact form on R^{2n+1}, n at least 2, equal to the standard contact form outside a compact set and defining the standard contact structure on all of R^{2n+1}, which has trapped Reeb orbits, including a torus invariant under the Reeb flow,
Geiges, Hansjörg   +2 more
core   +1 more source

Multiple Sclerosis at Home Access (MAHA): An Initiative to Improve Care in the Community. [PDF]

open access: yesInt J MS Care, 2019
Healey K   +6 more
europepmc   +1 more source

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