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If I want help to program an algorithm in PARI ,

which site is the proper one ?

I asked several question about tetration and power towers, and still do not have the desired algorithm managing all cases.

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If it is about the algorithm itself, ask it here (or TCS if it is "research level").

If it is about how to implement the algorithm in PARI, use StackOVerflow. They even have specific tags on PARI for the C library and PARI/GP for the Computer Algebra System. (I am not sure which one you meant.)

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  • $\begingroup$ I meant PARI/GP. Thanks! $\endgroup$
    – Peter
    Jan 23, 2014 at 10:30
  • $\begingroup$ For reference, here's the MetaSO thread about delineating the two tags. $\endgroup$
    – hardmath
    Jan 23, 2014 at 16:32
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    $\begingroup$ $\exists$ cs.stackexchange.com $\endgroup$
    – zyx
    Jan 24, 2014 at 3:13
  • $\begingroup$ @zyx: I didn't mention the CS site because I assumed that, given the choice of programming language, the OP's question, if is in fact about algorithms, would likely fall under number theory. $\endgroup$
    – Willie Wong
    Jan 24, 2014 at 11:51
  • $\begingroup$ It's all good, but I just thought that where TCS site is mentioned, the CS one potentially relevant as well (and may not be as known in these parts). $\endgroup$
    – zyx
    Jan 24, 2014 at 12:04
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I'd like to note that there is currently a proposal for an SE site that would take exactly this kind of question. It needs more suggested questions, so posting your question there as well would help it on its way (it won't get an answer, though - so post it on SO too as suggested above.)

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    $\begingroup$ The proposal was deleted for inactivity. $\endgroup$
    – user147263
    Dec 18, 2014 at 0:01

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