Ten fold

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Scortchi

00:59

Thanks

1 hour later…

User1865345

02:27

I was already having a suspicious feeling for that user was answering posts of varied topics at a staggering rate and when I noticed they also answered physics questions also of varied topics, it seemed too good to be true. One glaring thing was they didn't use para. There were repetitive usage of what was already written. And more importantly, they never responded to any further query/comment.

My explanation is that probably they were testing some highly developed experimental gen ai stuff.

Good riddance.

4 hours later…

User1865345

06:57

I am never able to understand this user's answer thanks to their invented confusing notations:

A: Questions about the conditional Radon-Nikodym derivative

Fubini's theorem only applies in a product space $Z=X\times Y $ when $X$ and $Y$ are independent, that is, if $P_Z(A\times B)=P_X(A)\times P_Y (B)$. In case of non-independence: $$\int f(x,y)dP_Z=\int \int f(x,y)dP_XdP_Y$$ is no longer valid, but this other one: $$\int f(x,y)dP_Z=\int dP_X\int f(...