P记号分析——0~ω

\[\begin{array}{c} \emptyset = 0 \\ P = 1 \\ P,P = 2 \\ P,P,P = 3 \\ P,P,P,P = 4 \\ {\Huge {\color{Red} \mathrm{Limit} = \omega} } \\ \end{array}\]