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Displaying 4001 – 4020 of 4762

Symmetric parareal algorithms for hamiltonian systems

Xiaoying Dai, Claude Le Bris, Frédéric Legoll, Yvon Maday (2013)

ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique

The parareal in time algorithm allows for efficient parallel numerical simulations of time-dependent problems. It is based on a decomposition of the time interval into subintervals, and on a predictor-corrector strategy, where the propagations over each subinterval for the corrector stage are concurrently performed on the different processors that are available. In this article, we are concerned with the long time integration of Hamiltonian systems. Geometric, structure-preserving integrators are...

Symmetric three-term recurrence equations and their symplectic structure.

Šimon Hilscher, Roman, Zeidan, Vera (2010)

Advances in Difference Equations [electronic only]

Symmetries and constants of the motion for dynamics in implicit form

G. Marmo, G. Mendella, W. M. Tulczyjew (1992)

Annales de l'I.H.P. Physique théorique

Symmetries and integrals of motion in optimal control

H. Sussmann (1995)

Banach Center Publications

Symmetries in connection preserving deformations.

Ormerod, Christopher M. (2011)

SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]

Symmetries of control systems

Alexey Samokhin (1996)

Banach Center Publications

Symmetries of the control systems of the form $u_{t} = f (t, u, v)$ , $u \in ℝ^{n}$ , $v \in ℝ^{m}$ are studied. Some general results concerning point symmetries are obtained. Examples are provided.

Symmetries of the nonlinear Schrödinger equation

Benoît Grébert, Thomas Kappeler (2002)

Bulletin de la Société Mathématique de France

Symmetries of the defocusing nonlinear Schrödinger equation are expressed in action-angle coordinates and characterized in terms of the periodic and Dirichlet spectrum of the associated Zakharov-Shabat system. Application: proof of the conjecture that the periodic spectrum $\dots < λ_{k}^{-} \leq λ_{k}^{+} < λ_{k + 1}^{-} \leq \dots$ of a Zakharov-Shabat operator is symmetric,i.e. $λ_{k}^{\pm} = - λ_{- k}^{\mp}$ for all $k$ , if and only if the sequence ${(γ_{k})}_{k \in ℤ}$ of gap lengths, $γ_{k} : = λ_{k}^{+} - λ_{k}^{-}$ , is symmetric with respect to $k = 0$ .

Symmetry group analysis and invariant solutions of hydrodynamic-type systems.

Sheftel, M.B. (2004)

International Journal of Mathematics and Mathematical Sciences

Symmetry in Architecture

Kim Williams (1999)

Visual Mathematics

Symmetry operators for the Fokker-Planck-Kolmogorov equation with nonlocal quadratic nonlinearity.

Shapovalov, Alexander V., Rezaev, Roman O., Trifonov, Andrey Yu. (2007)

SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]

Symmetry properties of a generalized Korteweg-de Vries equation and some explicit solutions.

Bracken, Paul (2005)

International Journal of Mathematics and Mathematical Sciences

Symplectic Capacities in Manifolds

Alfred Künzle (1997)

Banach Center Publications

Symplectic capacities coinciding on convex sets in the standard symplectic vector space are extended to any subsets of symplectic manifolds. It is shown that, using embeddings of non-smooth convex sets and a product formula, calculations of some capacities become very simple. Moreover, it is proved that there exist such capacities which are distinct and that there are star-shaped domains diffeomorphic to the ball but not symplectomorphic to any convex set.

Currently displaying 4001 – 4020 of 4762

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Displaying 4001 – 4020 of 4762

Symmetric parareal algorithms for hamiltonian systems

Symmetric three-term recurrence equations and their symplectic structure.

Symmetries and constants of the motion for dynamics in implicit form

Symmetries and integrals of motion in optimal control

Symmetries in connection preserving deformations.

Symmetries of control systems

Symmetries of the nonlinear Schrödinger equation

Symmetry group analysis and invariant solutions of hydrodynamic-type systems.

Symmetry in Architecture

Symmetry operators for the Fokker-Planck-Kolmogorov equation with nonlocal quadratic nonlinearity.

Symmetry properties of a generalized Korteweg-de Vries equation and some explicit solutions.

Symplectic Capacities in Manifolds

Symplectic capacities in two dimensions.

Symplectic convexity theorems and coadjoint orbits

Symplectic difference systems: oscillation theory and hyperbolic Prüfer transformation.

Symplectic field theory approach to studying ergodic measures related with nonautonomous Hamiltonian systems.

Symplectic geometry on moduli spaces of stable pairs

Symplectic gluing along hypersurfaces and resolution of isolated orbifold singularities.

Symplectic homology II. A general construction.

Symplectic Homology via Generating Functions.

Currently displaying 4001 – 4020 of 4762