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Coordinates in two variables over a  -algebra |
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| Authors: | Arno van den Essen Peter van Rossum |
| Institution: | Department of Mathematics, University of Nijmegen, Toernooiveld 1, 6525 ED Nijmegen, The Netherlands ; Department of Mathematical Sciences, New Mexico State University, Las Cruces, New Mexico 88003 |
| Abstract: | This paper studies coordinates in two variables over a  -algebra. It gives several ways to characterize such coordinates. Also, various results about coordinates in two variables that were previously only known for fields, are extended to arbitrary  -algebras. |
| Keywords: | Coordinates locally nilpotent derivations embeddings |
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