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nlin.CD2008★ 3 cited
Solution of reduced equations derived with singular perturbation methods
Masatomo Iwasa
For singular perturbation problems in dynamical systems, various appropriate singular perturbation methods have been proposed to eliminate secular terms appearing in the naive expa…
nlin.CD2008★ 4 cited
Renormalization group in difference systems
Masatomo Iwasa, Kazuhiro Nozaki
A new singular perturbation method based on the Lie symmetry group is presented to a system of difference equations. This method yields consistent derivation of a renormalization g…