【摘要】 调和级数是一个具体的、重要的数项级数 ,在级数理论中具有重要的地位。本文给出几种证明其发散性的不同方法 ,这对于熟悉调和级数 ,理解级数敛散性 ,掌握级数敛散性判定定理具有重要意义。更多还原

【Abstract】 Harmonic series is a concrete, important series, it plays an important role in the theory of series. Some proof about the non-convergence is given in this paper. This has important significance in comprehending the convergence of series and understanding the theory of convergence and non-convergence.更多还原