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 Feb 27 awarded Yearling Jan 9 revised Minimization/maximization of system of nonlinear equations edited title Jan 9 asked Minimization/maximization of system of nonlinear equations Oct 15 asked Solution to a small system of nolinear ODEs Sep 30 accepted Number of unique paths in a complete graph with n verticies Sep 30 asked Number of unique paths in a complete graph with n verticies Sep 16 answered Is the Library of Babel random? Does it contain information? Aug 29 comment Given a spectrum, what can we know about its function? @Wapiti Sure. I just happen to know this from my signals and systems background - I have a functional analysis textbook here which I read years ago and have forgotten most of, unfortunately. Hopefully someone more knowledgeable about such things can assist further as this is something I'm interested in as well... Aug 29 comment Given a spectrum, what can we know about its function? In addition, if the Laplace transform of a function has no roots in the right hand side of the complex plane, one can say definitively that the original function must in the limit be non-oscillating, i.e. it's not an infinite-energy signal. Aug 29 comment Given a spectrum, what can we know about its function? One thing I'm thinking about is for example in the case of the Laplace transform, one has the initial and final value theorems, where (under certain conditions) one can determine the asymptotic behavior of the original function by operating on the transform: fourier.eng.hmc.edu/e102/lectures/Laplace_Transform/node17.html And the Laplace transform is essentially a specific case of the Fourier transform. Aug 28 asked Comparison of bivariate generating functions Aug 15 comment Solving linear constrained optimization problem @JohanLöfberg You're right, in this case at least, all unknowns must be positive, as current cannot flow from a lower potential to a higher potential. Aug 15 comment Solving linear constrained optimization problem @A.G. Thank you, I had heard of linear programming, but I was under the impression that such a method was more appropriate in cases of inequality constraints, rather than strict equality constraints...though perhaps this is academic as I guess whatever algorithm free/commercial software is using can likely handle both. Aug 15 asked Solving linear constrained optimization problem Aug 2 awarded Notable Question Jul 17 comment Fourier transform of Bessel functions Thank you! I receive your notification. I'm not able to use this site as much as I'd like these days unfortunately, but your answer is great. Jun 25 awarded Notable Question May 16 comment Evaluating $\sum_{n=0}^{\infty}\frac{J_n(n)}{n!}$ Unfortunately, I don't see how this leads to the evaluation of a closed form. May 16 revised Evaluating $\sum_{n=0}^{\infty}\frac{J_n(n)}{n!}$ added 2 characters in body Apr 6 awarded Famous Question