In this paper we show derivations among logarithmic space bounded counting classes based on closure properties of $\#L$ that leads us to the result that $NL=C_=L\subseteq PL$.

翻译：本文基于$\#L$的封闭性质，展示了对数空间有界计数类之间的推导关系，由此得出$NL=C_=L\subseteq PL$这一结论。