Freiman Borel type ideals

Guangjun Zhu, Yakun Zhao, Shiya Duan +1

An equigenerated monomial ideal $I$ in the polynomial ring $S=K[x_1,\dots ,x_n]$ is a Freiman ideal if $\mu (I^2)=\ell (I)\mu (I)-\left(\genfrac{}{}{0ex}{}{\ell (I)}{2}\right)$ where $\ell (I)$ is the analytic spre…