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Geometrical methods in hydrodynamics

Adrian Constantin (2001)

Journées équations aux dérivées partielles

We describe some recent results on a specific nonlinear hydrodynamical problem where the geometric approach gives insight into a variety of aspects.

Geometry of fluid motion

Boris Khesin (2002/2003)

Séminaire Équations aux dérivées partielles

We survey two problems illustrating geometric-topological and Hamiltonian methods in fluid mechanics: energy relaxation of a magnetic field and conservation laws for ideal fluid motion. More details and results, as well as a guide to the literature on these topics can be found in [3].

Ito equation as a geodesic flow on Diff s ( S 1 ) C ( S 1 ) ^

Partha Guha (2000)

Archivum Mathematicum

The Ito equation is shown to be a geodesic flow of L 2 metric on the semidirect product space 𝐷𝑖𝑓𝑓 s ( S 1 ) C ( S 1 ) ^ , where 𝐷𝑖𝑓𝑓 s ( S 1 ) is the group of orientation preserving Sobolev H s diffeomorphisms of the circle. We also study a geodesic flow of a H 1 metric.

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