Based on the ″size″ of the set of perturbed minimal points in the variational principle, the differentiability of lower semicontinuous functions is examined by means of approximation of the inf-convolution sequence.%通过函数的下卷积函数列的逼近方法,在变分原理中从扰动最小值点集的"大小"入手,研究了下半连续函数的可微性.
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