On 4-9-09, Javed Alam wrote:
> Hi
> I have some examples of residues, poles and complex integrals here along
> with the theory.
>
> http://www.eng.ysu.edu/~jalam/engr6924s07/sessions/session8/session8.htm
> <http://www.eng.ysu.edu/~jalam/engr6924s07/sessions/session9/session9.htm>;
>
> http://www.eng.ysu.edu/~jalam/engr6924s07/sessions/session9/session9.htm
>
> Javed
-----------------------------------------
>>
>> These two principal value integrals illustrate
>> the deftness of ldefint, and the ineptness of
>> integrate for principle value integrals. I suspect
>> that integrate is not using ratsimp and logcontract
>> correctly (see below for a possible wrong
>> path) and that ldefint is doing the job right.
>>
>>
Thanks for the links. I think I was responsible for a
"red herring" by throwing out the Jordan's lemma
remark in the list message which started this thread.
In my last post, I was thinking the problem was
integrate doing ratsimp and logcontract in the
wrong order, and the problem has nothing to do
with closing the contour in the upper or lower
half plane.
But, what do I know? If I was lisp literate, I would
actually look at the code for integrate and be
worth listening to!
Anyway,
Ted