Ma, Jingjing2020-09-032020-09-032014J. Ma, Y. Zhang, Positive derivations on Archimedean d-rings, Algebra Univers. 72 (2014), 163-166.https://hdl.handle.net/10657.1/2449For an Archimedean d-ring R and a positive derivation D on R it is shown that D(R) is a subset of N(R), where N(R) is the l-radical of R.Lattice ordered ring, d-ring, positive derivationArticle