> Volker wrote:
> But having an iterator would be nice even for infinite
> finitely-generated groups.
+1
On Mon, Apr 21, 2014 at 12:10:13PM +, Dima Pasechnik wrote:
> it does not look obvious how you can ensure that the stream will not
> have repeated elements (without keeping the previous s
I don't think you can do that in general, this sounds like it would be
awfully close to deciding whether a fp group is finite or not.
So if the group is really infinite then iterating all the way needs
infinite memory in addition to infinite time. I'm fine with that. Sometimes
you just need a c
On 2014-04-21, Volker Braun wrote:
> On Monday, April 21, 2014 10:37:11 AM UTC+1, Nicolas M. Thiéry wrote:
>>
>> We should probably add a "category" optional argument to MatrixGroup,
>> so that we can specify this when we build the group.
>
>
> But having an iterator would be nice even for infin
On Monday, April 21, 2014 10:37:11 AM UTC+1, Nicolas M. Thiéry wrote:
>
> We should probably add a "category" optional argument to MatrixGroup,
> so that we can specify this when we build the group.
But having an iterator would be nice even for infinite finitely-generated
groups.
--
You rec
On Fri, Apr 18, 2014 at 09:17:16AM -0700, Volker Braun wrote:
>The problem is that we don't have an algorithm to find out that the group
>is finite (short of generating all elements). So it is placed in the
>"Groups" category instead of "FiniteGroups", and that doesn't have an
>iter
Volker,
Thanks for the workaround. What gets me is that it works in an older
version of sage.
On Friday, April 18, 2014 9:17:16 AM UTC-7, Volker Braun wrote:
>
> The problem is that we don't have an algorithm to find out that the group
> is finite (short of generating all elements). So it is
The problem is that we don't have an algorithm to find out that the group
is finite (short of generating all elements). So it is placed in the
"Groups" category instead of "FiniteGroups", and that doesn't have an
iterator. There should be an in-between category of finitely generated
groups whic
