In general, what non-differentiable functions have subgradient? Which non-differentiable functions do not have subgradient?
Does a function have to be convex for subgradient to be defined for that? How about $$f(x) = \sqrt{|x|}?$$
2026-03-25 17:26:29.1774459589
What non-differentiable functions have subgradient?
716 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail AtRelated Questions in CONVEX-OPTIMIZATION
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