Constants of Derivation and Differential Ideals
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Publication:5462853
DOI10.1081/AGB-200060502zbMATH Open1087.13013arXivmath/0311007MaRDI QIDQ5462853
Publication date: 27 July 2005
Published in: Communications in Algebra (Search for Journal in Brave)
Abstract: Let R be a differential domain finitely generated over a differential field, F, with field of constants, C, of characteristic 0. Let E be the quotient field of R. The paper investigates necessary and sufficient conditions on R's differential ideals for the constants of differentiation of E to also be C (no new constants). It was known that no proper nonzero differential ideals guarantees no new constants. The paper shows that when C is algebraically closed that if R has only finitely many height one prime differential ideals that E will have no new constants. An example with F infinitely generated over C shows the converse is false. The paper gives conditions on C and F so that when F is finitely generated over C and R is a polynomial ring over F that no new constants in E implies that R has only fintely many height one prime differential ideals.
Full work available at URL: https://arxiv.org/abs/math/0311007
Derivations and commutative rings (13N15) Integral domains (13G05) Commutative rings of differential operators and their modules (13N10)
Cites Work
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