On the relation between weak and strong invariance of differential equations
✍ Scribed by José F. Cariñena; M. A. Olmo; P. Winternitz
- Publisher
- Springer
- Year
- 1993
- Tongue
- English
- Weight
- 563 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0377-9017
No coin nor oath required. For personal study only.
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## Abstract This paper represents the third part of a contribution to the “dictionary” of homogeneous linear differential equations with polynomial coefficients on one hand and corresponding difference equations on the other. In the first part (cf. [4]) we studied the case that the differential equ
Let R be a compact region (Le., the closure of an open connected set) in R" which is of class C2. Let n i = l A = Zn,D, + a, be a first order partial differential expression on R, where D, = a/&,, ui is an m x m matrix of C2 functions, i = 1, \* \* \* , n, and a,, is an m x m matrix of C1 functions.