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 Jun 16 answered Finding a unique representation as a linear combination Jun 16 revised Sparse least-squares fitting of discrete probability distributions added 42 characters in body Jun 16 answered Sparse least-squares fitting of discrete probability distributions Jun 16 awarded Organizer Jun 16 revised devising a code for five symbols added 78 characters in body Jun 15 comment Is it correct that $\text{Cov}(X,Y) = \text{E}((X-\text{E}(X))Y)$? @MichaelHardy Is it well known because it's so ugly you can't forget it? Jun 15 accepted Water Systems: When can I use buckets of water to simulate an ODE. Jun 15 accepted Inverse Fourier Transform of $\prod_{j=1}^n \frac{k_j}{k_j+i\omega}$ Jun 15 accepted Limit on a spiral Jun 15 comment Limit on a spiral @oen What is it supposed to mean? Jun 15 comment Limit on a spiral @oen Morally? Is that an autocomplete error? Jun 15 comment Does p(a,b,c)=p(a,b)p(a,c) hold when b and c are independent? No, keep it, it's a perfectly good question. Jun 15 awarded Informed Jun 15 comment Limit on a spiral What do you mean partial limit, do you have a link? Jun 15 answered devising a code for five symbols Jun 15 comment devising a code for five symbols indeed, but it is shorter, and the shortest with $p(A)\gg p(B) \gg p(C) ...$ Jun 15 comment Limit on a spiral This leads me to think $\{1,-1\}$ should be excluded. Though $\lim_{x\to\pm\infty} \coth x = \pm1$, is probably why it should be included. Jun 15 comment devising a code for five symbols E should be 1111 not 11110 - you dont need a "stop" character as it is implicit when you have enough 1s Jun 15 asked Limit on a spiral Jun 15 comment Solving for $x$: $1=\frac{1}{x}+\frac{1}{1+\frac{1}{x}}+\frac{1}{1+\frac{1}{1+\frac{1}{x}}}+\cdots$ I did, it just seems more difficult to do, and worse look and interact with.