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Max, min, and the L1 norm? Those have derivatives (gradients) almost everywhere. The derivatives are undefined at a set of points of measure zero, and the fun
by kragen 1y ago
Max, min, and the L1 norm? Those have derivatives (gradients) almost everywhere. The derivatives are undefined at a set of points of measure zero, and the functions are continuous across those gaps.
- constantcrying 1y agoAnd that means, by definition, that they do not have a derivative. If you don't believe me open a real analysis textbook.