On Sets of Lengths in Monoids of plus-minus weighted Zero-Sum Sequences

Alfred Geroldinger, Florian Kainrath

Let $G$ be an additive abelian group. A sequence $S=g_1\cdot \dots \cdot g_{\ell }$ of terms from $G$ is a plus-minus weighted zero-sum sequence if there are $\varepsilon_1, \ld…