Branch cuts of complex functions

[vdb...@gmail.com]

I just got burned by the fact that the sage documentation does not
specify the branch cut of the Ei
function. A simple experiment show that it lies along the positive
real axis.

In Maple it apparently lies along the negative real axis...(this is
specified in the documentation).

In principle the documentation of a complex function should specify
its branchcuts....

Michel

[Martin Albrecht]

On Sunday 02 November 2008, vdb...@gmail.com wrote:
> In principle the documentation of a complex function should specify
> its branchcuts....

"Implement it and send me a patch" ;-)

Martin

--
name: Martin Albrecht
_pgp: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8EF0DC99
_www: http://www.informatik.uni-bremen.de/~malb
_jab: martinr...@jabber.ccc.de

[vdb...@gmail.com]

>
> "Implement it and send me a patch" ;-)
>

I know.... :-( Unfortunately I have no time to go through
all
the definitions....sigh...

With my post I just wanted to raise awareness of this issue.

Regards,
Michel

[John H Palmieri]

How about this?

<http://trac.sagemath.org/sage_trac/ticket/4423>

John

[vdb...@gmail.com]

Thanks a lot !

Michel