In this paper we prove a convergence theorem of the proximate point algorithm for minimization of DC function, and propose a kind of inexact proximate point algorithm for the minimization problem.
本文证明DC函数最小化问题邻近点算法的一个收敛性定理，并对此问题提出一类非精确邻近点算法。
It is described about the teaching on contrast of control convergence theorem. The authors point out its advantages and attention to enhance teaching effectiveness.
对于采用对比法讲授控制收敛定理进行了说明，指出其优点与注意事项，以增强教学效果。
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