Signature invariants of monomial ideals

Jovanny Ibarguen, Carlos E. Valencia, Rafael H. Villarreal

Let $I$ be a monomial ideal of a polynomial ring $R=K[x_1,\dots ,x_n]$ over a field $K$ and let $\mathrm{sgn}(I)$ be its signature ideal. If $I$ is not a principal ideal, we show that…