One can find here *Mathematica* programs and many figures that
were not included in a paper. Choose a problem:

- Simple model with logarithmic function
- Quartic anharmonic oscillator
- Cubic anharmonic oscillator
- Sextic anharmonic oscillator
- Octic anharmonic oscillator
- Two related problems
- Accuracy of high-order approximants for series of factorials, especially its sensibility to perturbation
- Two-variable anharmonic oscillator with perturbation x y^2

Currently, there is no linking, because it needs
much time. One can find all figures and data files in a directory **./**
and its subdirectories.

Calculate Rayleigh - Schrodinger perturbation series for the
quartic, cubic, sextic, octic anharmonic oscillators and the
Barbanis potential (two-dimensional anharmonic oscillator) using *Mathematica* programs.

See also another Unpublished SMU reports.

`Designed by A. Sergeev.`