On 7/26/08, Dieter Kaiser <drdieterkaiser at web.de> wrote:
> If you are interested to add the code of the Exponential Integrals to Maxima, I
> would chose the name you prefer. It is no problem to go back to the name
> logintegral_li for the Logarithmic Integral.
I'll leave it to you to make the decision on this point.
> Here my to-do list for the Exponential Integrals:
>
> 1. Numerical routine for real and complex parameter of E[n](z)
> for Float and Bigfloat numbers.
> 2. Expansion in terms of the erfc function for half integral values
> 3. Transformation to a Hypergeometric representation
> 4. Switching beetwen different representations, e.g.
> Exponential Integrals -> Gamma Incomplete or Trignometric Integrals
> 5. Support for symbolically complex characteristics like
> imagpart(expintegral_ei(z)), realpart(), conjugate() and cabs().
All of this sounds really good to me. Thanks a lot for working on this.
I appreciate it a lot.
Robert Dodier