On Sun, Feb 7, 2016 at 9:16 AM, Travis Scrimshaw <tsc...@ucdavis.edu> wrote:

>
>
> On Sunday, February 7, 2016 at 7:54:03 AM UTC-6, Jeroen Demeyer wrote:
>>
>> On 2016-02-07 14:50, Travis Scrimshaw wrote:
>> > So then what do you think about the current behavior, where if there
>> > is no (implemented) is_prime(), we then try to convert to ZZ?
>>
>> We don't *try* to convert, we just convert. No problem with that.
>>
>
>    I consider it as trying because it may not succeed. Anyways, then let
> me rephrase my proposal as convert to the base ring for elements of a
> fraction field construction.
>

I would prefer raising an error.  There is a definition of prime for
fraction fields, and it's not the same as for the base field.
David

>
> Best,
> Travis
>
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