differential operator;
jets;
field extensions;
prolongations of derivations;
extensions of linear differential operators;
D O I:
10.1023/A:1005802708344
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
Let K subset of R subset of P be a tower of fields, N be a P-module, and Delta:R --> N be a K-linear differential operator. The aim of this paper is to investigate whether the operator Delta has an extension to P, i.e. if these exists a differential operator Delta':P --> N such that Delta'\(R) = Delta. The results of this paper were published in Russian in Mat. Zametki 30(2) (1981), 237-248.