Maybe because of Wick theorem, which is mostly combinatorial fact.

Thanks Leyla Mirvakhabova for all, thanks Hanno Ackerman and Michael Hoffman for giving me as much freedom as I needed. Last but not least thanks Qualcomm to not be afraid of dealing with export license issues and again to Hanno and Michael for waiting while and if I got it.

Classic link.springer.com/article/10.1...

You are looking for Fractional Fokker-Planck equation.

Basically it boils down to be a particular case of inference with Renyi type divergence, for which maybe easier to google suitable inference method.

It is useful to open brackets, then it is norm constrained optimisation of overlap between two positive functions, for which you can make MC estimates.

It is not 👍

I like books of Faddeev (en.wikipedia.org/wiki/Ludvig_...).

You need to work on your grump skills.