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Oct 17, 2019 at 20:15 comment added Mateusz Kwaśnicki This looks a little bit like the Metropolis-Hastings algorithm, with uniform jumps. The rejection mechanism is of course much different, but still I find the two somewhat analogous.
Oct 17, 2019 at 15:49 history edited Anthony Quas CC BY-SA 4.0
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Oct 15, 2019 at 6:21 comment added Anthony Quas @MichaelHardy: I haven't seen conditoinal convergence in probability before. On the other hand, what I'm doing here is a version of my favourite party trick: essentially using extra randomness (in this case the $N$ which is the target random variable) to build something doing what you want (Notice that the $N$ once built in to the $Z$'s is obtained from the $Z$'s rather than the other way around). I have generally done things a bit like this in dynamical systems, where I call the technique "Coupling and Splicing". The symmetry is a bonus making things work out nicely.
Oct 15, 2019 at 4:07 comment added Michael Hardy ok, I have this open-ended question: When does conditional convergence occur in the theory of probability? (I wonder if I've seen it before.)
Oct 15, 2019 at 4:03 comment added Michael Hardy Amazing. I would have guessed that what was asked for cannot be done. $\qquad$
Oct 14, 2019 at 21:13 vote accept Iosif Pinelis
Oct 14, 2019 at 18:27 comment added Anthony Quas @IosifPinelis : I tried to expand the explanation in the way that you suggested.
Oct 14, 2019 at 18:26 comment added Anthony Quas @MattF. : Sorry. I have no idea what the joint pdf looks like. (I do know the marginal PDFs though!)
Oct 14, 2019 at 18:24 history edited Anthony Quas CC BY-SA 4.0
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Oct 14, 2019 at 15:05 comment added Iosif Pinelis Very nice! However, it may seem unclear when you write "by symmetry (under replacing each random variable by its negation)" but actually (of course) do not negate the $Z_i$'s. Can you detail this symmetry consideration?
Oct 14, 2019 at 9:05 comment added user44143 Can you clarify — what is the pdf for the sequence $u_1, u_2, \ldots$?
Oct 14, 2019 at 8:12 history edited Anthony Quas CC BY-SA 4.0
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Oct 14, 2019 at 8:05 history answered Anthony Quas CC BY-SA 4.0