Unverified50% confidenceFactExact time
The presenter frankly admitted that there is currently no clear geometric explanation for why it is the second-order derivative of the square root of the covariance—rather than of the covariance itself—that must vanish, and this can only be verified algebraically.
1
Sources
50%
Confidence
Long-term
Relevance
10/2/2026
First Seen
Sources
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