Results 31 to 40 of about 58,877 (128)

Quantized anti de Sitter spaces and non-formal deformation quantizations of symplectic symmetric spaces [PDF]

open access: yes, 2007
We realize quantized anti de Sitter space black holes, building Connes spectral triples, similar to those used for quantized spheres but based on Universal Deformation Quantization Formulas (UDF) obtained from an oscillatory integral kernel on an ...
Bieliavsky, Pierre   +3 more
core   +2 more sources

Feature Extraction of Gearbox Early Fault based on ISGMD and MED

open access: yesJixie chuandong, 2022
Aiming at the difficulty in identifying early faults and compound faults of gearboxes under strong noise background,a method of extracting fault features based on the combination of improved symplectic geometry mode decomposition (ISGMD) and minimum ...
Shuzhou Dong, Xunpeng Qin, Shiming Yang
doaj  

Conformally symplectic structures and the Lefschetz condition

open access: yesComptes Rendus. Mathématique
This short note provides a symplectic analogue of Vaisman’s theorem in complex geometry. Namely, for any compact symplectic manifold satisfying the hard Lefschetz condition in degree 1, every locally conformally symplectic structure is in fact globally ...
Lejmi, Mehdi, Wilson, Scott O.
doaj   +1 more source

Extended Riemannian geometry II: local heterotic double field theory

open access: yesJournal of High Energy Physics, 2018
We continue our exploration of local Double Field Theory (DFT) in terms of symplectic graded manifolds carrying compatible derivations and study the case of heterotic DFT.
Andreas Deser   +2 more
doaj   +1 more source

Geometric Quantization and Epistemically Restricted Theories: The Continuous Case [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2017
It is possible to reproduce the quantum features of quantum states, starting from a classical statistical theory and then limiting the amount of knowledge that an agent can have about an individual system [5, 18].These are so called epistemic ...
Ivan Contreras, Ali Nabi Duman
doaj   +1 more source

From symplectic cohomology to Lagrangian enumerative geometry

open access: yes, 2014
We build a bridge between Floer theory on open symplectic manifolds and the enumerative geometry of holomorphic disks inside their Fano compactifications, by detecting elements in symplectic cohomology which are mirror to Landau-Ginzburg potentials.
Akifumi Akamine (607213)   +6 more
core   +3 more sources

Hyper-symplectic structures on integrable systems

open access: yes, 2003
We prove that an integrable system over a symplectic manifold, whose symplectic form is covariantly constant w.r.t. the Gauss-Manin connection, carries a natural hyper-symplectic structure.
Bartocci, C., Mencattini, I.
core   +1 more source

Symplectic Applicability of Lagrangian Surfaces

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2009
We develop an approach to affine symplectic invariant geometry of Lagrangian surfaces by the method of moving frames. The fundamental invariants of elliptic Lagrangian immersions in affine symplectic four-space are derived together with their ...
Lorenzo Nicolodi, Emilio Musso
doaj   +1 more source

Symplectic Toric Geometry and the Regular Dodecahedron

open access: yesJournal of Mathematics, 2015
The regular dodecahedron is the only simple polytope among the platonic solids which is not rational. Therefore, it corresponds neither to a symplectic toric manifold nor to a symplectic toric orbifold.
Elisa Prato
doaj   +1 more source

Equivariant toric geometry and Euler–Maclaurin formulae

open access: yesCommunications on Pure and Applied Mathematics, EarlyView.
Abstract We first investigate torus‐equivariant motivic characteristic classes of toric varieties, and then apply them via the equivariant Riemann–Roch formalism to prove very general Euler–Maclaurin‐type formulae for full‐dimensional simple lattice polytopes.
Sylvain E. Cappell   +3 more
wiley   +1 more source

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