# zbMATH — the first resource for mathematics

A note to pointwise transformations of linear quasi-differential equations. (English) Zbl 0731.34007
Scalar differential equation, which can be obtained by elimination from the system $$y'=A(x)y$$ (where the elements of $$n\times n$$ matrix A satisfy conditions $$A^ i_{i+1}\neq 0$$, $$A^ i_ j=0$$ for $$1\leq i+2\leq j\leq n)$$ is called in this paper a linear quasi-differential equation of n-th order. The author formulates the pointwise transformations of these equations (see the following review).

##### MSC:
 34A30 Linear ordinary differential equations and systems 34C20 Transformation and reduction of ordinary differential equations and systems, normal forms
Full Text: