Corrigendum to 'On trace codes and Galois invariance over finite commutative chain rings' [Finite Fields Appl. 22 (2013) 114-121]

摘要

1. Corrigendum in preliminaries [2; section 2] a characterization of galois extensions of finite commutative chain rings was cited (namely. Corollary xv.4 of [3)). As pointed out to us by [4| this characterization is false. Apparently; this fact was first noticed in [5]. The correct section 2. preliminaries should be given as follows (the changes with respect to the previous version are restricted to the second and third paragraphs).