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- W4385373900 abstract "Let K be differential field with algebraically closed field of constants. Let K^diff be a differential closure of K, and L the (iterated) Picard-Vessiot closure of K inside K^diff. Let G be a linear differential algebraic group over K and X a differential algebraic torsor for G over K. We prove that X(L) is Kolchin-dense in X. When G is finite-dimensional we prove that X(L) = X(K^diff). We give close relationships between Picard-Vessiot extensions of K and torsors for suitable finite-dimensional linear differential algebraic groups over K. We suggest some differential field analogues of the notion of boundedness for fields (Serre's property F)." @default.
- W4385373900 created "2023-07-29" @default.
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- W4385373900 date "2023-07-27" @default.
- W4385373900 modified "2023-09-23" @default.
- W4385373900 title "Picard-Vessiot extensions, linear differential algebraic groups and their torsors" @default.
- W4385373900 doi "https://doi.org/10.48550/arxiv.2307.14948" @default.
- W4385373900 hasPublicationYear "2023" @default.
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