MathGroup Archive 2009

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Re: Permanent Computation Efficiency

  • To: mathgroup at
  • Subject: [mg105369] Re: [mg105077] Re: Permanent Computation Efficiency
  • From: ?UTF-8?B?5a2Z5oy6?= <sunt05 at>
  • Date: Mon, 30 Nov 2009 06:09:12 -0500 (EST)
  • References: <> <he372o$err$>

Thanks all same!
The community is so nice:)

On Sun, Nov 29, 2009 at 2:39 AM, Leonid Shifrin <lshifr at> wrote:

> Hi,
> Well, I wouldn't explain it better than Daniel did, and I know far less
> about it than he does. Since Coefficient takes derivatives, it does not need
> to expand the product, but can use the product formula for derivatives -
> this is I guess the reason for its efficiency in this case.
> Regards,
> Leonid
>> Could you please tell me what combinatorial knowledge is in need to
>> understand the function Coefficient?

  • Prev by Date: Re: Re: to become {{f[a],g[a]},{f[b],g[b]},{f[c],g[c]}}
  • Next by Date: Re: Using GraphPlot to draw an empty graph
  • Previous by thread: Re: Permanent Computation Efficiency
  • Next by thread: Re: Re: Fyi, Listing of Mathematica 7