Codes over rings of size four, Hermitian lattices, and corresponding theta functions

T. Shaska, G. S. Wijesiri

Let $K=Q(\sqrt{-\ell })$ be an imaginary quadratic field with ring of integers ${Ø}_K$, where $\ell$ is a square free integer such that $\ell \equiv 3\mathrm{mod}4$ and $C=[n,k]$ be a linea…