On the t-DLIPs of codes over finite commutative rings

Generalizing the linear complementary duals, the linear complementary pairs and the hull of codes, we introduce the concept of t-dimension linear intersection pairs (t-DLIPs) of codes over a finite commutative ring (R), for some positive integer t. In this paper, we study t-DLIP of codes over R in a very general setting by a uniform method. Besides, we provide a necessary and sufficient condition for the existence of a non-free (or free) t- DLIP of codes over a finite commutative Frobenius ring. In addition, we obtain a generator set of the intersection of two constacyclic codes over a finite chain ring which helps us to get an important characterization of t-DLIP of constacyclic codes. Finally, the t-DLIP of constacyclic codes over finite chain rings are used to construct new entanglement-assisted quantum error correcting (EAQEC) codes.(c) 2023 Elsevier B.V. All rights reserved.