Results 11 to 20 of about 1,106 (166)

Linear symplectomorphisms asR-Lagrangian subspaces [PDF]

open access: bronzeInvolve, a Journal of Mathematics, 2015
The graph of a real symplectic linear transformation is an R-Lagrangian subspace of a complex symplectic vector space. The restriction of the complex symplectic form is thus purely imaginary and may be expressed in terms of the generating function of the transformation.
Chris Hellmann   +2 more
openalex   +4 more sources

The homotopy Lie algebra of symplectomorphism groups of 3-fold blow-ups of the projective plane [PDF]

open access: green, 2012
By a result of Kedra and Pinsonnault, we know that the topology of groups of symplectomorphisms of symplectic 4-manifolds is complicated in general. However, in all known (very specific) examples, the rational cohomology rings of symplectomorphism groups
Sı́lvia Anjos, Martin Pinsonnault
openalex   +2 more sources

STABLE WEAK SHADOWABLE SYMPLECTOMORPHISMS ARE PARTIALLY HYPERBOLIC

open access: bronzeCommunications of the Korean Mathematical Society, 2014
Abstract. Let M be a closed, symplectic connected Riemannian mani-fold and f a symplectomorphism on M. We prove that if f is C 1 -stablyweak shadowable on M, then the whole manifold M admits a partiallyhyperbolic splitting. 1. Introduction, basic definitions and statement of the results1.1.
Mário Bessa, Sandra Vaz
openalex   +5 more sources

Symplectomorphism groups and isotropic skeletons [PDF]

open access: bronzeGeometry & Topology, 2005
Published by Geometry and Topology at http://www.maths.warwick.ac.uk/gt/GTVol9/paper21.abs ...
Joseph Coffey
openalex   +6 more sources

Symplectomorphism groups and almost complex structures [PDF]

open access: green, 2000
This paper studies groups of symplectomorphisms of ruled surfaces for symplectic forms with varying cohomology class. This class is characterized by the ratio R of the size of the base to that of the fiber. By considering appropriate spaces of almost complex structures, we investigate how the topological type of these groups changes as R increases.
Dusa McDuff
openalex   +3 more sources

Commuting symplectomorphisms and Dehn twists in divisors [PDF]

open access: bronzeGeometry & Topology, 2015
Two commuting symplectomorphisms of a symplectic manifold give rise to actions on Floer cohomologies of each other. We prove the elliptic relation saying that the supertraces of these two actions are equal. In the case when a symplectomorphism $f$ commutes with a symplectic involution, the elliptic relation provides a lower bound on the dimension of ...
Dmitry Tonkonog
openalex   +5 more sources

Tau-Functions and Monodromy Symplectomorphisms [PDF]

open access: yesCommunications in Mathematical Physics, 2021
AbstractWe derive a new Hamiltonian formulation of Schlesinger equations in terms of the dynamical r-matrix structure. The corresponding symplectic form is shown to be the pullback, under the monodromy map, of a natural symplectic form on the extended monodromy manifold. We show that Fock–Goncharov coordinates are log-canonical for the symplectic form.
M. Bertola, D. Korotkin
openaire   +3 more sources

Polynomial symplectomorphisms [PDF]

open access: bronzeBulletin of the London Mathematical Society, 2008
Stanisław Janeczko, Zbigniew Jelonek
openalex   +2 more sources

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