Mathematics – Commutative Algebra
Scientific paper
2009-07-25
Mathematics
Commutative Algebra
8 pages, an information about financial support has been added
Scientific paper
Answering a question of J.~Kovacic, we show that, for any Keigher ring, its
differential spectrum coincides with the differential spectrum of the ring of
global sections of the structure sheaf. In particular, we obtain the answer for
Ritt algebras, that is, differential rings containing the rational numbers.
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