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Groups > comp.soft-sys.math.maple > #278

Re: A hypergeom evaluation

From Axel Vogt <&noreply@axelvogt.de>
Newsgroups comp.soft-sys.math.maple
Subject Re: A hypergeom evaluation
Date 2012-01-04 19:59 +0100
Message-ID <9mjlttFnv4U1@mid.individual.net> (permalink)
References <c6b6cac2-e927-4a18-84a4-6af955cfcd7a@32g2000yqp.googlegroups.com> <874nwbgvid.fsf@san.rr.com>

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On 04.01.2012 19:42, Joe Riel wrote:
> Peter Luschny<peter.luschny@googlemail.com>  writes:
>
>> F := (n,m) ->  (m/n)*2^(n-m)*binomial(2*n-m-1,n-m)*hypergeom([1/2+m/2,m/
>> 2,m-n],[m,1+m-2*n],2);
>> round(evalf(F(1,1),64));
>>
>> Maple VR5 gives the value -I. Is this correct?
>>
>> Cheers, Peter
>
> with Maple 15:
>
> simplify(F(1,1));
>                      -I
>

Yes, it simplifies to 1/sqrt( 1 - z ) and z=2 gives it.

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Thread

A hypergeom evaluation Peter Luschny <peter.luschny@googlemail.com> - 2012-01-04 09:22 -0800
  Re: A hypergeom evaluation Joe Riel <joer@san.rr.com> - 2012-01-04 10:42 -0800
    Re: A hypergeom evaluation Axel Vogt <&noreply@axelvogt.de> - 2012-01-04 19:59 +0100
    Re: A hypergeom evaluation Peter Luschny <peter.luschny@googlemail.com> - 2012-01-04 11:08 -0800
      Re: A hypergeom evaluation "G. A. Edgar" <edgar@math.ohio-state.edu.invalid> - 2012-01-05 06:21 -0700
        Re: A hypergeom evaluation Axel Vogt <&noreply@axelvogt.de> - 2012-01-05 14:47 +0100
          Re: A hypergeom evaluation Peter Luschny <peter.luschny@googlemail.com> - 2012-01-05 10:01 -0800
            Re: A hypergeom evaluation Axel Vogt <&noreply@axelvogt.de> - 2012-01-05 19:44 +0100
              Re: A hypergeom evaluation Peter Luschny <peter.luschny@googlemail.com> - 2012-01-05 11:57 -0800
                Re: A hypergeom evaluation Axel Vogt <&noreply@axelvogt.de> - 2012-01-06 11:37 +0100
                Re: A hypergeom evaluation Peter Luschny <peter.luschny@googlemail.com> - 2012-01-06 03:51 -0800
                Re: A hypergeom evaluation Axel Vogt <&noreply@axelvogt.de> - 2012-01-06 14:47 +0100
                Re: A hypergeom evaluation "G. A. Edgar" <edgar@math.ohio-state.edu.invalid> - 2012-01-07 06:10 -0700
            Re: A hypergeom evaluation Axel Vogt <&noreply@axelvogt.de> - 2012-01-05 20:05 +0100
              Re: A hypergeom evaluation Peter Luschny <peter.luschny@googlemail.com> - 2012-01-05 12:17 -0800
                Re: A hypergeom evaluation Axel Vogt <&noreply@axelvogt.de> - 2012-01-05 23:02 +0100

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