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The one-dimensional centred maximal function diminishes the variation of indicator functions. (arXiv:2107.12404v1 [math.CA]) http://arxiv.org/abs/2107.12404
The one-dimensional centred maximal function diminishes the variation of indicator functions. (arXiv:2107.12404v1 [math.CA]) http://arxiv.org/abs/2107.12404