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 Jun 22 comment Variance of random variable @Did Nope, I would not be so bold. There are plenty of answers that expect you would describe as being without proofs here, the custom is not only to write proofs. I'd defend your right to think and say it should be otherwise, but personally I like them, as do others. Jun 22 comment Variance of random variable @Did And no request for a proof, or claim of being one was made (though I would consider it a sketch). I was simply asking why you insistently pointed this out. I am, however, totally "evading" your "request for explanation" after last time: it's ingenuous. If you're just annoyed that the informal answer got accepted, don't wrap it up in a pretension of understanding. If you really are trying to understand I would suggest you ask something more directed, like "I find it hard to understand how part $X$ can be written more formally, as I think you may run into difficulties with aspect $Y$". Jun 21 comment Variance of random variable @Did Are you saying that one or more of those statements are false? Or you just disapproving of the lack of symbols and/or details? Jun 21 comment Variance of random variable @Did it's around here somewhere. Jun 21 revised Variance of random variable added 33 characters in body Jun 21 answered Variance of random variable Jun 21 accepted The difference between inside and outside Jun 21 comment Sparse least-squares fitting of discrete probability distributions Yeah, well I guess all I was saying is give it a go with whatever package you have to hand. The old do first optimise later maxim. That's been my experience with these things, though not a great answer admittedly. Perhaps someone can do better, maybe on cs.SE or the scientific computing one? Have you estimated how long it will take with standard algorithms? Jun 20 comment The difference between inside and outside @Avitus continuity yes, bijective yes, $C^\infty$ not so sure. I was interested in what fundamentally differentiates inside and outside, $f$ was supposed to be illustrative rather than a formal definition. Jun 20 comment The difference between inside and outside @AsafKaragila My experience has been that neither of those are strictly true :P Jun 20 asked The difference between inside and outside Jun 18 comment possible prime factors of $4^{444}+3$ Just out of interest, how long would factoring a number like that take? Jun 18 comment Is the statement true? I really don't see what the problem with the notation is. It's pretty standard. e.g. $\sin^2 x + \cos^2 x = 1$. It's also the usual for writing the $n$'th derivative as $f^{(n)}$. Jun 18 comment What could be a homeomorphism from the circle to a triangle? +1 Graphics are good :) Jun 17 comment Comparing uniform priors It doesn't mean that, as they are densities, and densities with respect to different measures. Try this excercise, imagine the the $n$-sphere has a radius 1 meter, what are the units of $\pi(\Theta_{q})$? what are the units of your ratio? Jun 17 comment Comparing uniform priors This seems to have everything to do with geometry and very little to do with probability. I'm intrigued as to where your teacher is going with this. Do let me know when you find out. Jun 16 comment A question about scaling o_O I'm quite confused. Perhaps you could add a little context, in most other situations where the form $f(x,y)$ denotes a function $X\times Y\rightarrow Z$, $f(x)$ denotes a completely different type of function $X\rightarrow Z$. Explaining things expressed in unconventional notation requires additional context from which to deduce the meaning of the notation. Jun 16 comment Is there a rational number between any two irrationals? @BlueRaja-DannyPflughoeft yeah, I thought that, then I read the [bit in brackets in the question]. Jun 16 comment A question about scaling Also, should it be $\Delta^2$ everywhere, you initially wrote $\Delta$? Jun 16 comment A question about scaling For the second equation, the function has differing numbers of arguments.