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The Derksen invariant vs. the Makar-Limanov invariant |
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| Authors: | Anthony Crachiola Stefan Maubach |
| Affiliation: | Department of Mathematics, Wayne State University, Detroit, Michigan 48202 ; Department of Mathematics, University of Nijmegen, Toernooiveldt, 6525 ED Nijmegen, The Netherlands |
| Abstract: | In this article it is shown that the Makar-Limanov invariant of a ring (or variety) can be trivial while the Derksen invariant is not, and vice versa. |
| Keywords: | Makar-Limanov invariant Derksen invariant ring invariant locally nilpotent derivation |
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