The BKK root count in $\mathbf {C}^n$
The BKK root count in $\mathbf {C}^n$
The root count developed by Bernshtein, Kushnirenko and Khovanskii only counts the number of isolated zeros of a polynomial system in the algebraic torus $(\mathbf {C}^*)^n$. In this paper, we modify this bound slightly so that it counts the number of isolated zeros in $\mathbf {C}^n$. Our bound is, apparently, …