Till Hoffmann
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 Apr 26 answered Show that any conjugate pair of complex numbers (with non-zero imaginary part) cannot be the spectrum of any 2x2 matrix with real, nonnegative entries Apr 26 answered Avoid exponential growth when scaling Apr 26 asked Approximating the integral of a large product Sep 17 comment Central limit theorem for positive random variables Indeed, the article seems more like "I found something fun" than a proper paper. Nevertheless, I agree with their intuitive arguments. Sep 17 comment Central limit theorem for positive random variables Apologies, I forgot to include the factor of $n$. That's fixed. Sep 17 revised Central limit theorem for positive random variables Corrected missing $n$ factor for variance. Sep 17 asked Central limit theorem for positive random variables May 25 comment Mixture of binomial distributions Yes, the notation could be more rigorous. As you mentioned in your third comment, I seek the marginal distribution of $K$. I assume that $a$ is sufficiently small for the Poisson distribution to be a good approximation irrespective of $x$. Unfortunately, the approximation does not help with the integral. May 25 asked Mixture of binomial distributions Feb 25 comment Normal approximation to the log-normal distribution @RobertIsrael, do you have a reference for your answer above? Citing stackexchange is probably a bit tricky. Sep 23 awarded Popular Question Aug 18 asked Equivalent to proportionality sign for additive constants Mar 28 comment What is the maximum volume of a cylinder that can fit in a sphere of a constant radius? Thanks for the catch. That is now fixed. Mar 28 revised What is the maximum volume of a cylinder that can fit in a sphere of a constant radius? Correction motivated by comment. Feb 10 awarded Commentator Feb 10 comment Repeated convolution of probability distributions I have had a bit of a read and found some interesting distributions. For the sake of computational simplicity, I am interested in distributions with simple PDFs, CDFs and inverse CDFs. The Levy distribution seems a great candidate but has a non-finite moment. Any suggestions for a distribution with analytic PDF, CDF, inverse CDF and finite first moment? Feb 10 answered Given $n$-linearly independent vectors how do I find a vector not orthogonal to any of them? Feb 10 comment Repeated convolution of probability distributions Thanks for the hint. I found this book, which discusses the topic in more detail: amazon.com/… Feb 10 accepted Repeated convolution of probability distributions Feb 10 awarded Student