Astrophysics (index)

Lie Transform

(Infinitesimal Transform)
(type of infinitesimal transform)

The Lie Transform or Infinitesimal Transform is a theory by mathematician Sophus Lie, of groups of arbitrarily small (infinitesimal) transforms, which are useful for making use of some differential equations, e.g., for analysis of perturbations in Hamiltonian mechanical systems.


(mathematics,differential equations)
http://en.wikipedia.org/wiki/Infinitesimal_Transform

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