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 $NL=PL=C_=L$.

翻译：本文基于$#L$的闭包性质，展示了对数空间有界计数类之间的若干推导关系，由此得出$NL=PL=C_=L$这一结果。