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Classical mechanics. Field theory --- Hamiltonian systems --- Hamiltonsystemen --- Systèmes hamiltoniens --- Systèmes hamiltoniens. --- Schrodinger, Equation de. --- 51 --- Mathematics --- 51 Mathematics
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Differential equations, Partial. --- Hamiltonian operator. --- Hamiltonian systems. --- Perturbation (Mathematics) --- Équations aux dérivées partielles. --- Opérateur hamiltonien. --- Perturbation (mathématiques) --- Systèmes hamiltoniens --- Equations aux derivees partielles non lineaires --- Equations aux derivees partielles sur une variete --- Equations aux derivees partielles non lineaires --- Equations aux derivees partielles sur une variete
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This book is dedicated to the mathematical study of two-dimensional statistical hydrodynamics and turbulence, described by the 2D Navier-Stokes system with a random force. The authors' main goal is to justify the statistical properties of a fluid's velocity field u(t,x) that physicists assume in their work. They rigorously prove that u(t,x) converges, as time grows, to a statistical equilibrium, independent of initial data. They use this to study ergodic properties of u(t,x) - proving, in particular, that observables f(u(t,.)) satisfy the strong law of large numbers and central limit theorem. They also discuss the inviscid limit when viscosity goes to zero, normalising the force so that the energy of solutions stays constant, while their Reynolds numbers grow to infinity. They show that then the statistical equilibria converge to invariant measures of the 2D Euler equation and study these measures. The methods apply to other nonlinear PDEs perturbed by random forces.
Hydrodynamics --- Turbulence --- Flow, Turbulent --- Turbulent flow --- Fluid dynamics --- Statistical methods. --- Mathematics.
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This volume collects three series of lectures on applications of the theory of Hamiltonian systems, contributed by some of the specialists in the field. The aim is to describe the state of the art for some interesting problems, such as the Hamiltonian theory for infinite-dimensional Hamiltonian systems, including KAM theory, the recent extensions of the theory of adiabatic invariants and the phenomena related to stability over exponentially long times of Nekhoroshev's theory. The books may serve as an excellent basis for young researchers, who will find here a complete and accurate exposition of recent original results and many hints for further investigation.
Hamiltonian systems --- Systèmes hamiltoniens --- Congresses. --- Congrès --- Hamiltonian systems. --- Mathematics. --- Differentiable dynamical systems. --- Differential equations, partial. --- Cell aggregation --- Thermodynamics. --- Dynamical Systems and Ergodic Theory. --- Partial Differential Equations. --- Manifolds and Cell Complexes (incl. Diff.Topology). --- Mechanics, Fluids, Thermodynamics. --- Mathematical Theory --- Geometry --- Calculus --- Mathematics --- Physical Sciences & Mathematics --- Hamiltonian dynamical systems --- Systems, Hamiltonian --- Aggregation, Cell --- Cell patterning --- Partial differential equations --- Differential dynamical systems --- Dynamical systems, Differentiable --- Dynamics, Differentiable --- Math --- Dynamics. --- Ergodic theory. --- Partial differential equations. --- Manifolds (Mathematics). --- Complex manifolds. --- Classical and Continuum Physics. --- Science --- Analytic spaces --- Manifolds (Mathematics) --- Geometry, Differential --- Topology --- Ergodic transformations --- Continuous groups --- Mathematical physics --- Measure theory --- Transformations (Mathematics) --- Dynamical systems --- Kinetics --- Mechanics, Analytic --- Force and energy --- Mechanics --- Physics --- Statics --- Cell interaction --- Microbial aggregation --- Differential equations --- Global analysis (Mathematics) --- Topological dynamics --- Continuum physics. --- Classical field theory --- Continuum physics --- Continuum mechanics --- Differentiable dynamical systems
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