Rees algebras on smooth schemes: integral closure and higher differential operators

Orlando Villamayor

Let $V$ be a smooth scheme over a field $k$, and let $\{I_n,n\ge 0\}$ be a filtration of sheaves of ideals in $\calo_V$, such that $I_0=\calo_V$, and $I_s\cdot I_t\subset I_{s+t}…