Nonlinear Analysis as a Calculus

Authors

  • Alexander D. Bruno

Abstract

In the last 60 years, there was formed a universal nonlinear analysis, whose unified algorithms allow to find asymptotic forms and asymptotic expansions of solutions to nonlinear equations and systems of different types: algebraic, ordinary differential (ODE), partial differential (PDE) and systems of mixed-type equations. This calculus contains two main algorithms: (a) Reducing equations to the normal form and (b) Separating truncated equations, and two kinds of transformations of coordinate can be used to simplify the obtained equations: (A) Power and (B) Logarithmic. Here we show that for algebraic equation, single ODE, autonomous system of ODE’s, Hamiltonian system, single PDE. Some applications are mentioned as well.

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Published

2023-04-24

How to Cite

Nonlinear Analysis as a Calculus. (2023). London Journal of Research In Science: Natural and Formal, 23(5), 1-31. https://journalspress.uk/index.php/LJRS/article/view/134