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With the goal to study and better understand algebraic Anosov actions of $\mathbb R^k$, we develop a higher codimensional analogue of the contact distribution on odd dimensional manifolds, call such structure a generalized $k$-contact…

Dynamical Systems · Mathematics 2019-10-31 U. N. Matos de Almeida

Bourgeois proved in [5] that odd-dimensional tori admit a contact structure. We shall prove a more general result: Any odd-dimensional parallelisable closed manifold admits a contact structure. This implies that a solvmanifold $\Gamma…

Symplectic Geometry · Mathematics 2026-03-10 Christoph Bock

We show that for dynamically convex contact forms in three dimensions, the cylindrical contact homology differential d can be defined by directly counting holomorphic cylinders for a generic almost complex structure, without any abstract…

Symplectic Geometry · Mathematics 2016-07-14 Michael Hutchings , Jo Nelson

The existence of several exotic phenomena, such as duality and spectral anholonomy is pointed out in one-dimensional quantum wire with a single defect. The topological structure in the spectral space which is behind these phenomena is…

Quantum Physics · Physics 2009-11-07 Taksu Cheon

In discrete geometry, the contact number of a given finite number of non-overlapping spheres was introduced as a generalization of Newton's kissing number. This notion has not only led to interesting mathematics, but has also found…

Metric Geometry · Mathematics 2020-02-12 Karoly Bezdek , Muhammad A. Khan

We prove that a meromorphic map defined on the complement of a compact subset of a three-dimensional Stein manifold M and with values in a compact complex three-fold X extends to the complement of a finite set of points. If X is simply…

Complex Variables · Mathematics 2007-05-23 Sergei Ivashkovich , Bernard Shiffman

Given a contact structure on a manifold $V$ together with a supporting open book decomposition, Bourgeois gave an explicit construction for a contact structure on $V \times \mathbb{T}^2$. We prove that all such structures are universally…

Symplectic Geometry · Mathematics 2019-09-02 Jonathan Bowden , Fabio Gironella , Agustin Moreno

We prove that there is a unique real tight contact structure on the 3-ball with convex boundary up to isotopy through real tight contact structures. We also give a partial classification of the real tight solid tori with the real structure…

Geometric Topology · Mathematics 2018-07-17 Ferit Ozturk , Nermin Salepci

The question of whether a Sasakian metric can admit an additional compatible (K-)contact structure is addressed. In the complete case if the second structure is also assumed Sasakian, works of Tachibana-Yu and Tanno show that the manifold…

Differential Geometry · Mathematics 2013-01-01 Tedi Draghici , Philippe Rukimbira

The first goal of this paper is to construct examples of higher dimensional contact manifolds with specific properties. Our main results in this direction are the existence of tight virtually overtwisted closed contact manifolds in all…

Symplectic Geometry · Mathematics 2019-11-01 Fabio Gironella

Connecting curves have been shown to organize the rotational structure of strange attractors in three-dimensional dynamical systems. We extend the description of connecting curves and their properties to higher dimensions within the special…

Chaotic Dynamics · Physics 2015-06-15 Greg Byrne , Juan Cebral , Robert Gilmore

On a manifold with an almost contact metric structure $(\varphi,\vec\xi,\eta,g,X,D)$ the notions of the interior and the $N$-prolonged connections are introduced. Using the $N$-prolonged connection, a new almost contact metric structure is…

Differential Geometry · Mathematics 2015-06-08 Sergey V. Galaev

It is well known that every complex contact $3$-manifold, when regarded as a real manifold, gives rise to a fat $(4,6)$-distribution that admits two Reeb directions. Nonetheless, it was an open question whether the converse was true. This…

Geometric Topology · Mathematics 2026-03-20 Javier Martínez-Aguinaga

Holomorphic (nondegenerate) mappings between complex manifolds of the same dimension are of special interest. For example, they appear as coverings of complex manifolds. At the same time they have very strong "extra" extension properties in…

Complex Variables · Mathematics 2008-11-11 S. Ivashkovich

A $b$-contact structure on a $b$-manifold $(M,Z)$ is a Jacobi structure on $M$ satisfying a transversality condition along the hypersurface $Z$. We show that, in three dimensions, $b$-contact structures with overtwisted three-dimensional…

Symplectic Geometry · Mathematics 2024-12-10 Robert Cardona , Cédric Oms

Some aspects of the multidimensional soliton geometry are considered.

Differential Geometry · Mathematics 2007-05-23 R. N. Syzdykova , Kur. R. Myrzakul , G. N. Nugmanova , R. Myrzakulov

Contact Geometry is an odd dimensional analogue of Symplectic Geometry. This vague idea can actually be formalized in a rather precise way by means of a Symplectic-to-Contact Dictionary. The aim of this review paper is discussing the basic…

Differential Geometry · Mathematics 2026-02-02 Fabrizio Pugliese , Giovanni Sparano , Luca Vitagliano

In this article we introduce and analyze in detail singular contact structures, with an emphasis on $b^m$-contact structures, which are tangent to a given smooth hypersurface $Z$ and satisfy certain transversality conditions. These singular…

Symplectic Geometry · Mathematics 2025-09-01 Eva Miranda , Cédric Oms

A contact manifold is a manifold equipped with a distribution of codimension one that satisfies a `maximal non-integrability' condition. A standard example of a contact structure is a strictly pseudoconvex CR manifold, and operators of…

Differential Geometry · Mathematics 2011-11-28 Erik van Erp

We consider manifolds endowed with a contact pair structure. To such a structure are naturally associated two almost complex structures. If they are both integrable, we call the structure a normal contact pair. We generalize the Morimoto's…

Differential Geometry · Mathematics 2009-06-20 G. Bande , A. Hadjar