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May
9
revised Save a C compiled function without losing the blessing of C compiler
edited title
May
9
comment Save a C compiled function without losing the blessing of C compiler
+1. BTW it's a little surprising to me that the default Directory[] isn't included in $LibraryPath.
May
9
asked Save a C compiled function without losing the blessing of C compiler
May
9
reviewed Approve Difference between Sort and SortBy
May
9
revised Can RecurrenceTable make use of CompiledFunction?
deleted 27 characters in body
May
9
revised Can RecurrenceTable make use of CompiledFunction?
deleted 27 characters in body
May
9
revised Can RecurrenceTable make use of CompiledFunction?
deleted 36 characters in body
May
8
revised How to implement symbolic Ramanujan's summation in Mathematica?
edited tags
May
7
comment How to implement symbolic Ramanujan's summation in Mathematica?
@Anixx Yeah, the ability of Sum seems to become the new threshold. BTW the new formula using DifferenceDelta is even harder to implement… p.s. I suggest you to add these formulas to the question rather than in the comment only.
May
7
revised How to implement symbolic Ramanujan's summation in Mathematica?
added 180 characters in body
May
7
answered How to implement symbolic Ramanujan's summation in Mathematica?
May
7
comment Speed up the auxiliary function magicSquare when $n$ is doubly-even
@ShutaoTang It's undocumented, but mentioned in a few posts here, for example this. You can have a search for more…Well, I admit I found no detailed explanation for so long. Maybe you can consider asking a separate question for this issue?
May
7
comment How to implement symbolic Ramanujan's summation in Mathematica?
@Anixx Seems to be another invalid definition: f[x_] = x; g[x_] = DifferenceDelta[f[x], x]; -NSum[ BernoulliB[Floor@n, 1]/n! Derivative[n - 1][g][0], {n, Infinity}] produces -0.5.
May
7
reviewed Approve Graphically approximating the area under a curve as a sum of rectangular regions
May
7
comment How to implement symbolic Ramanujan's summation in Mathematica?
Well, actually I really tried to solve this problem for a while on the day you raised this question, but finally be confused and worn out by the definition in the wikipedia page. There seems to be several different definitions in wiki, and none of them produces the desired result, maybe I didn't understand them correctly...
May
7
comment How to implement symbolic Ramanujan's summation in Mathematica?
@Anixx What's the definition of $\Delta[]$?
May
7
comment Speed up the auxiliary function magicSquare when $n$ is doubly-even
@ShutaoTang I've added some brief explanation, hope it helps.
May
7
revised Speed up the auxiliary function magicSquare when $n$ is doubly-even
some explanation added.
May
6
revised Speed up the auxiliary function magicSquare when $n$ is doubly-even
deleted 2 characters in body
May
6
revised Speed up the auxiliary function magicSquare when $n$ is doubly-even
deleted 2 characters in body