关于交错级数Leibniz判别法的一点注释

Notes On interlock Series Leibniz Discrimination

交错级数Leibniz判别法是一个判别交错级数敛散性的主要方法和依据，但不可忽视的是它并不是对任何交错级数都有效，换言之，若交错级数满足其条件时必收敛，但其条件不完全具备时，级数未必发散。

Interlock series Leibniz discrimination is the main method and foundation in justifying the restraining and spreading of an interlock series. However, it should not be neglected that the method is not effective to any interlock series. In other words, if the interlock series satisfies the conditions Of the discrimination, it is sure to restain; but if it cannot cannot the conditions of the discrimination, it is not sure to spread.