Some users originally ask a question on Cross-Validated and as they get no answer there, the same question is cross-posted here. I would like to flag the cross-post here as a duplicate / cross-post from Cross-Validate (or any other SE site), but i receive the warning
The duplicate question must exist on Quantitative Finance Stack Exchange.
This makes sense, as i think a duplicate to be a slightly different question (from another user) on the site here.