On Wednesday, June 16, 2010, Tom Coates wrote:
>
>
> On 16 June, 07:48, rjf wrote:
>
>> By your reasoning, and for other domains we would have the following
>> behavior:
>>
>> 1-2 --> error. 1 and 2 are both positive integers. In order to
>> provide the answer -1, one must
>> expand the domai
On 16 June 2010 05:28, Tom Coates wrote:
>
> As ddrake pointed out in Trac #9248, even when x is in the symbolic
> ring, factorial(x) is not simply calling gamma(x+1):
>
> sage: x=I; factorial(x)
> 0.498015668118356 - 0.154949828301811*I
> sage: gamma(x+1)
> gamma(I + 1)
>
> So something strange i
