I consider that the vote is now closed. The result is 6 for AA, 3 for BB
and 1 for ?A. Other people did not express a clear choice.
Please now review https://trac.sagemath.org/ticket/18505, which implements
the AA choice.
Frédéric
Le jeudi 27 octobre 2016 10:48:17 UTC+2, Frédéric Chapoton a éc
I expect that
(1) If M is not square, then there is no ".is_similar" method attached to M.
(2) If M is square and N has different size, then raise an error.
If False is returned in the case (2), then the user needs to make
additional efforts to find the cause (either N has the same size but is
Hi John,
On 2016-10-27, John H Palmieri wrote:
>>The OOP way would be to have a mix-in class and subclasses for square
>> matrices that implement these methods.
The category's parent_class resp. element_class are such mix-in classes.
>> This would mean setting the Element
>> attribute in
On 2016-10-27, William Stein wrote:
> On Thu, Oct 27, 2016 at 11:25 AM, kcrisman wrote:
>> On Thursday, October 27, 2016 at 2:11:58 PM UTC-4, John H Palmieri wrote:
>>>
>>> (1) Why should a nonsquare matrix even have an "is_similar" method? Can we
>>> get rid of that? (Same for "determinant" and
Hi John,
On 2016-10-27, John H Palmieri wrote:
> (1) Why should a nonsquare matrix even have an "is_similar" method? Can we
> get rid of that? (Same for "determinant" and some other methods.)
It would be possible using the category framework's "ElementMethods".
x.is_similar(y) makes sense for
On Thursday, October 27, 2016 at 2:42:56 PM UTC-7, Travis Scrimshaw wrote:
>
>
>
> On Thursday, October 27, 2016 at 2:12:01 PM UTC-5, William wrote:
>>
>> On Thu, Oct 27, 2016 at 11:25 AM, kcrisman wrote:
>> >
>> >
>> > On Thursday, October 27, 2016 at 2:11:58 PM UTC-4, John H Palmieri
>> wr
On Thursday, October 27, 2016 at 2:12:01 PM UTC-5, William wrote:
>
> On Thu, Oct 27, 2016 at 11:25 AM, kcrisman > wrote:
> >
> >
> > On Thursday, October 27, 2016 at 2:11:58 PM UTC-4, John H Palmieri
> wrote:
> >>
> >> (1) Why should a nonsquare matrix even have an "is_similar" method? Ca
On Thu, Oct 27, 2016 at 11:25 AM, kcrisman wrote:
>
>
> On Thursday, October 27, 2016 at 2:11:58 PM UTC-4, John H Palmieri wrote:
>>
>> (1) Why should a nonsquare matrix even have an "is_similar" method? Can we
>> get rid of that? (Same for "determinant" and some other methods.)
>
>
> Those are no
On Thursday, October 27, 2016 at 2:11:58 PM UTC-4, John H Palmieri wrote:
>
> (1) Why should a nonsquare matrix even have an "is_similar" method? Can we
> get rid of that? (Same for "determinant" and some other methods.)
>
Those are not even the most annoying methods like this throughout Sage t
(1) Why should a nonsquare matrix even have an "is_similar" method? Can we
get rid of that? (Same for "determinant" and some other methods.)
(2) What is the definition of similar?
(a) Two matrices M and N, both square of the same size, are similar iff
there is an invertible matrix P so that M
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