Results 81 to 90 of about 48,683 (227)

The contact cut graph and a Weinstein L$\mathcal {L}$‐invariant

open access: yesTransactions of the London Mathematical Society, Volume 12, Issue 1, December 2025.
Abstract We define and study the contact cut graph which is an analogue of Hatcher and Thurston's cut graph for contact geometry, inspired by contact Heegaard splittings (Giroux, Proceedings of the International Congress of Mathematicians, Beijing, 2002; Torisu, Internat. Math. Res. Notices (2000), 441–454).
Nickolas A. Castro   +5 more
wiley   +1 more source

On a class of even-dimensional manifolds structured by an affine connection

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
We deal with a 2m-dimensional Riemannian manifold (M,g) structured by an affine connection and a vector field 𝒯, defining a 𝒯-parallel connection. It is proved that 𝒯 is both a torse forming vector field and an exterior concurrent vector
I. Mihai, A. Oiagă, R. Rosca
doaj   +1 more source

Folded symplectic toric four-manifolds [PDF]

open access: yesJournal of Symplectic Geometry, 2018
We show that two orientable, four-dimensional folded symplectic toric manifolds are isomorphic provided that their orbit spaces have trivial degree-two integral cohomology and there exists a diffeomorphism of the orbit spaces (as manifolds with corners) preserving orbital moment maps.
openaire   +2 more sources

SYMPLECTIC STRUCTURES ON STATISTICAL MANIFOLDS [PDF]

open access: yesJournal of the Australian Mathematical Society, 2011
AbstractA relationship between symplectic geometry and information geometry is studied. The square of a dually flat space admits a natural symplectic structure that is the pullback of the canonical symplectic structure on the cotangent bundle of the dually flat space via the canonical divergence. With respect to the symplectic structure, there exists a
openaire   +1 more source

Boundedness of Differential of Symplectic Vortices in Open Cylinder Model

open access: yesMathematics
Let G be a compact connected Lie group, (X,ω,μ) a Hamiltonian G-manifold with moment map μ, and Z a codimension-2 Hamiltonian G-submanifold of X. We study the boundedness of the differential of symplectic vortices (A,u) near Z, where A is a connection 1 ...
Hai-Long Her
doaj   +1 more source

Erratum to “on the group of strong symplectic homeomorphisms”

open access: yesCubo, 2012
We give a proof of the estimate (1.1) which is the main ingredient in the proof that the set SSympeo (M, ω) of strong symplectic homeomorphisms of a compact symplectic manifold (M, ω) forms a group [1].Probamos la estimación (1.1) que es el ...
Augustin Banyaga
doaj  

Geometric Theory of Heat from Souriau Lie Groups Thermodynamics and Koszul Hessian Geometry: Applications in Information Geometry for Exponential Families

open access: yesEntropy, 2016
We introduce the symplectic structure of information geometry based on Souriau’s Lie group thermodynamics model, with a covariant definition of Gibbs equilibrium via invariances through co-adjoint action of a group on its moment space, defining physical ...
Frédéric Barbaresco
doaj   +1 more source

Geodesics and magnetic curves in the 4-dim almost Kähler model space F4

open access: yesComplex Manifolds
We study geodesics and magnetic trajectories in the model space F4{{\rm{F}}}^{4}. The space F4{{\rm{F}}}^{4} is isometric to the 4-dim simply connected Riemannian 3-symmetric space due to Kowalski. We describe the solvable Lie group model of F4{{\rm{F}}}^
Erjavec Zlatko, Inoguchi Jun-ichi
doaj   +1 more source

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