Accession Number : AD0681403

Title :   PERTURBATION OF LINEAR ORDINARY DIFFERENTIAL EQUATIONS AT IRREGULAR SINGULAR POINTS.

Descriptive Note : Technical summary rept.,

Corporate Author : WISCONSIN UNIV MADISON MATHEMATICS RESEARCH CENTER

Personal Author(s) : Sibuya,Yasutaka

Report Date : AUG 1968

Pagination or Media Count : 23

Abstract : A block-diagonalization theorem of a linear system of differential equations at an irregular singular point is proved. Such a transformation is constructed so that it admits an asymptotic representation with respect to the independent variable and parameters. (Author)

Descriptors :   (*DIFFERENTIAL EQUATIONS, *PERTURBATION THEORY), TRANSFORMATIONS(MATHEMATICS), NONLINEAR DIFFERENTIAL EQUATIONS, ASYMPTOTIC SERIES, MATRICES(MATHEMATICS), COMPLEX VARIABLES, THEOREMS

Subject Categories : Theoretical Mathematics

Distribution Statement : APPROVED FOR PUBLIC RELEASE