recursion.ninja
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 Jan3 comment Encode order of playing cards (data compression) It should be noted that this method of factoradic indexing works generally any finite set when encoding permutations. Bijective implementions are quite straight-forward in high level languages. Dec21 awarded Caucus Nov5 awarded Yearling Nov1 comment Help with mathematical side of programming? How did you derive $22$ from the least common multiple of $30$? Sep18 comment What functions satisfy this functional equation? +1 Such a simple rearrangement leading to such a clear definition Sep11 revised How do I compute binomial coefficients efficiently? corrected my code Sep11 revised How do I compute binomial coefficients efficiently? use infix notation for better composition Sep11 answered How do I compute binomial coefficients efficiently? Jul2 comment How would you count a base > 36 system? Use all the unicode characters and get upto base 65535 Jul2 awarded Curious May30 revised Determining the number of valid TicTacToe board states in terms of board dimension restrucured table to remove scrollbar May10 comment Is it possible to represent every huge number in abbreviated form? What about large prime numbers...? How would you 'abbreviate' them? The sum of two 'abbreviated' composite numbers? Feb28 revised Evaluating limit of $\lim_{x \to 0^+} x \ln(x)$ changed incorrect variable in limit Feb28 suggested approved edit on Evaluating limit of $\lim_{x \to 0^+} x \ln(x)$ Feb28 awarded Organizer Feb28 revised How to be a successful math undergraduate student? added soft question tag Feb28 suggested approved edit on How to be a successful math undergraduate student? Feb21 comment How do you describe your mathematical research in layman's terms? I think you meant this periodic table Feb15 awarded Critic Jan25 awarded Nice Answer