#15057: SymPy conversions for symbolic functions that are missing them
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Reporter: eviatarbach | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.12
Component: symbolics | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: #14694 | Stopgaps:
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Comment (by eviatarbach):
Actually, I didn't include the conversions for the exponential integrals
and `lambert_w`. Patch for that coming up.
Here are the functions in Sage that are not in SymPy as far as I can tell.
I haven't checked the ones in `sage/rings/arith.py` yet, and of course
there are tons of combinatorial functions.
* Dickman's function (`dickman_rho` in Sage)
* Heaviside step function and unit step function (`heaviside` and
`unit_step` in Sage; they only seem to differ in that `heaviside` is
undefined at 0)
* Inverse Jacobi functions (`inverse_jacobi` in Sage)
* Jacobi amplitude function (to be added in #14996 as `jacobi_am`)
* Spherical Bessel and spherical Hankel functions (`spherical_bessel_J`,
`spherical_bessel_Y`, `spherical_hankel1`, and `spherical_hankel2` in
Sage)
* Symmetric zeta function (`zeta_symmetric` in Sage)
* Derivatives of the zeta function (`zetaderiv` in Sage)
Note that some SymPy conversions are going to be added in pending tickets
that transition functions to use Sage's `BuiltinFunction` instead of being
simple Maxima wrappers. For example, #15046 and #14996.
--
Ticket URL: <http://trac.sagemath.org/ticket/15057#comment:9>
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