Hulls and sums of separable constacyclic codes over ${\mathbb{F}}_q\times ({\mathbb{F}}_q+v{\mathbb{F}}_q)$ and new quantum codes

Yu Qian, Yu Wang, Liqi Wang

We establish the generator polynomials of the Euclidean and Hermitian duals of separable constacyclic codes over $\mathcal{S}={\mathbb{F}}_q\times ({\mathbb{F}}_q+v{\mathbb{F}}_q)$, w…