scholarly journals Geometric Decompositions of Almost Contact Manifolds

Author(s):  
Francisco Presas
Keyword(s):  
2011 ◽  
Vol 60 (5) ◽  
pp. 1425-1486 ◽  
Author(s):  
Michael Eastwood ◽  
A. Rod Gover
Keyword(s):  

Author(s):  
David E. Blair

SynopsisClassically the tangent sphere bundles have formed a large class of contact manifolds; their contact structures are not in general regular, however. Specifically we prove that the natural contact structure on the tangent sphere bundle of a compact Riemannian manifold of non-positive constant curvature is not regular.


1981 ◽  
Vol 266 (2) ◽  
pp. 583-583 ◽  
Author(s):  
G. Burdet ◽  
M. Perrin
Keyword(s):  

2019 ◽  
Vol 11 (01) ◽  
pp. 53-108 ◽  
Author(s):  
Marcelo R. R. Alves

In this paper we study the growth rate of a version of Legendrian contact homology, which we call strip Legendrian contact homology, in 3-dimensional contact manifolds and its relation to the topological entropy of Reeb flows. We show that: if for a pair of Legendrian knots in a contact 3-manifold [Formula: see text] the strip Legendrian contact homology is defined and has exponential homotopical growth with respect to the action, then every Reeb flow on [Formula: see text] has positive topological entropy. This has the following dynamical consequence: for all Reeb flows (even degenerate ones) on [Formula: see text] the number of hyperbolic periodic orbits grows exponentially with respect to the period. We show that for an infinite family of 3-manifolds, infinitely many different contact structures exist that possess a pair of Legendrian knots for which the strip Legendrian contact homology has exponential growth rate.


1969 ◽  
Vol 21 (3) ◽  
pp. 354-362 ◽  
Author(s):  
D. E. Blair ◽  
G. D. Ludden
Keyword(s):  

2018 ◽  
Vol 10 (03) ◽  
pp. 493-530
Author(s):  
Mark McLean

In this paper, we give partial answers to the following questions: Which contact manifolds are contactomorphic to links of isolated complex singularities? Which symplectic manifolds are symplectomorphic to smooth affine varieties? The invariant that we will use to distinguish such manifolds is called the growth rate of wrapped Floer cohomology. Using this invariant we show that if [Formula: see text] is a simply connected manifold whose unit cotangent bundle is contactomorphic to the link of an isolated singularity or whose cotangent bundle is symplectomorphic to a smooth affine variety then M must be rationally elliptic and so it must have certain bounds on its Betti numbers.


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