Equation 10.16.1143D7AA1ADEB6

\begin{equation} \bigcup _{\substack {Y\subset X\ \mathrm{irreducible},\ \dim Y>0\\ \mathcal R(a;Y)=0}}Y =\operatorname {Null}(a)=E_{\mathrm{nK}}(a). \end{equation}