TY - JOUR T1 - Down–Up Algebras and Ambiskew Polynomial Rings JO - Journal of Algebra UR - https://doi.org/10.1006/jabr.1999.8264 PY - 2000/06/01 AU - Jordan DA ED - DO - DOI: 10.1006/jabr.1999.8264 PB - Elsevier BV VL - 228 IS - 1 SP - 311 EP - 346 Y2 - 2025/05/02 ER -