Abstract
Let K ⊂ R ⊂ P be a tower of fields, N be a P-module, and Δ: R → N be a K-linear differential operator. The aim of this paper is to investigate whether the operator Δ has an extension to P, i.e. if these exists a differential operator Δ′: P → N such that Δ′|R = Δ. The results of this paper were published in Russian in Mat. Zametki 30(2) (1981), 237–248.
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Vinogradov M. M.: Extensions of fields and extensions of linear differential operators, Mat. Zametki 30(2) (1981), 237–248 (in Russian).
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Vinogradov, M.M. Field Extensions and Extensions of Linear Differential Operators. Acta Applicandae Mathematicae 49, 271–280 (1997). https://doi.org/10.1023/A:1005802708344
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DOI: https://doi.org/10.1023/A:1005802708344