usumdelphini
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 Mar30 revised Stress calculation for stokes equation in 2D added 72 characters in body Mar30 asked Stress calculation for stokes equation in 2D Mar30 asked Define and refine mesh around a hole Mar6 comment Extract a part of Series This fails to work for expansions around $\infty$ Mar6 awarded Critic Mar5 comment Extract a part of Series The last two do not work for example for x^(-1/2) + 2 x^-1 + 3 x^(-3/2) + 4 x^-2 + 5 x^(1/2) + x^1 + x^(3/2) Mar5 awarded Yearling Mar5 comment Extract a part of Series This looks very simple, thanks! But it doesn't help when there also are fractionary powers of $x$ in the series... Is there a way to make it work as SeriesCoefficient? Mar5 comment Extract the divergent/bounded part of a certain expression Sure, sorry for the misunderstanding. Mar5 revised Extract the divergent/bounded part of a certain expression added 1 character in body Mar5 comment Extract a part of Series Thanks! And if I wanted the function, not only the coefficients? Mar5 asked Extract the divergent/bounded part of a certain expression Mar5 accepted Extract a term of Series output Mar5 asked Extract a part of Series Mar5 asked Extract a term of Series output Mar5 comment Truncate a sum in a 'smart' way If for example I have Sum[c[n] r^(1-n/2)+d[n] r^(n/2-1),{n,Infinity}] this will give zero Mar5 comment Truncate a sum in a 'smart' way It is a little but uncomfortable because it does not seem to work on the whole series. I mean, unless I multiply filter[cond] individually in front of each term that can give problems, it does not work. Mar5 accepted Infinite Sum with exclusion Mar5 comment Infinite Sum with exclusion Well, this is not very practical if I have many excluded values Mar5 asked Infinite Sum with exclusion