On Sat, Jun 18, 2011 at 11:06 PM, Sean Vig <[email protected]> wrote: > On Fri, Jun 17, 2011 at 23:37, Ondrej Certik <[email protected]> > wrote: >> >> On Fri, Jun 17, 2011 at 7:23 PM, Sean Vig <[email protected]> wrote: >> > Regarding the normalization you impose, I get that same normalization to >> > fall out of the equations. From the equations, you get directly >> > (-I)**(m-mp) * (-1)**(j+mp) >> > Which is equal to the expression you gave if you start playing with the >> > exponents. >> >> Which equations did you get it from? I could not figure it out (I >> tried for couple hours... and failed), >> so it's exciting you managed to get it out of the equations somehow. I >> would be most interested in how. >> >> Then I'll put it into my notes, so that I don't forget it. >> >> Ondrej >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sympy" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/sympy?hl=en. >> > > I had used the same equations you noted in the comments, which I > attached, and I was able to get the same factor (note that (-1)**(2*m) == > (-1)**(2*mp) for physical values of m and mp), but I realized while I was > writing it up that it appeared on the wrong side of the equation. I tried > playing with some other equations again today, but wasn't able to get > anything that produced the same sign convention. That said, the symbolic > results with the sign correction you make definitely checks out against > those in the book.
Thanks for checking it. So either way, there do seems to be problems with the equations in Varshalovich. What really matters at the end is to make sure, that our D functions are correct, which we can check against Mathematica, or other sources as well. If it is, then I wouldn't worry about this for now, we can derive it properly later. Ondrej -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
