无穷级数的收敛性与发散性与此概念有关。
Convergence and divergence of infinite series depend upon this concept.
在建立积分方程时，运用平面高斯定理改善了级数的收敛性。
In deriving the integral equation, the convergence of series is modified by application of the plane Gauss Theorem.
性质3在级数中去掉、加上或改变有限项，不会改变级数的收敛性。
Property 3 Deleting, adding and altering the finite terms of the infinite series keep the convergence of the series.
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