A note on rings of constants of derivations in integral domains
Volume 122 / 2011
Colloquium Mathematicum 122 (2011), 241-245
MSC: Primary 13N15; Secondary 13B22.
DOI: 10.4064/cm122-2-9
Abstract
We observe that the characterization of rings of constants of derivations in characteristic zero as algebraically closed subrings also holds in positive characteristic after some natural adaptation. We also present a characterization of such rings in terms of maximality in some families of rings.
