3 ms·
Yeah you're right, the subdifferential of f(x)=|x| at the origin is the interval [−1, 1]. In the fourth paragraph of link [1] in the above post they explain qu
by OisinMoran 8y ago
Yeah you're right, the subdifferential of f(x)=|x| at the origin is the interval [−1, 1].
In the fourth paragraph of link [1] in the above post they explain quite well why we can get away with this type of trickery even if it seems wrong.
- mehrdadn 8y ago> Yeah you're right, the subdifferential of f(x)=|x| at the origin is the interval [−1, 1]. I'm confused where you're seeing absolute value? I never had absolute value anywhere. The second example I wrote just amounted to y = x.