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MathGroup Archive 2007

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Re: Integrating SphericalHarmonicY

  • To: mathgroup at
  • Subject: [mg73243] Re: Integrating SphericalHarmonicY
  • From: wgempel at
  • Date: Thu, 8 Feb 2007 03:45:31 -0500 (EST)
  • References: <eq9c4v$n37$><eqc7jq$sfg$>

On Feb 7, 3:54 am, dh <d... at> wrote:
> Hi,
> if you want to define a rule for this integral for symbolic l and m, you
> may define an Upvalue for e.g. Integrate:

Ok, I thought I might need to do something like this.  How do I make
sure that integral is only simplified when I have the correct

> > $Assumptions =
> >     {Element[Alternatives[theta,phi], Reals] &&
> >      Element[Alternatives[l,m], Integers] &&
> >      l >= Abs[m]}

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