英语语法分析

The convergency of the algorithm is discussed.

研究和分析了迭代优化算法的收敛性。

City, is essentially the result of element convergency.

城市，本质上是要素聚集的结果。

Under very mild conditions, the algorithm possesses global-convergency.

在较弱的条件下，获得了算法的全局收敛性定理。