[sage-devel] Re: bug in matrix solve over inexact coefficients?

This is the expected behavior after trac #12406 . The OUTPUT section of the docstring of solve_right says "... If the system is not square or does not have full rank, then a solution is attempted via other means. For example, over "RDF" or "CDF" a least-s

[sage-devel] bug in matrix solve over inexact coefficients?

Hi, I'm observing the following with version 9.1 (but not with 9.0 where the behavior is correct): sage: m = matrix(SR, [0]) sage: b = vector([1]) sage: m.solve_right(b) (0) This should of course raise ValueError: matrix equation has no solutions It seems to be specific to inexact coefficien

Re: [sage-devel] Pre-Announcement: Global Virtual SageDays 109 - May 28, 2020 (all timezones)

On Thursday, May 21, 2020 at 1:04:07 PM UTC-7, François Bissey wrote: > > Hum. May 21, 19:30GMT = May 22 7:30 NZ time I was in the middle of > preparing breakfast > for the kids and we should go to school shortly. > Needless to say I won’t participate at 7:30am on a Saturday morning. > > Please

Re: [sage-devel] Pre-Announcement: Global Virtual SageDays 109 - May 28, 2020 (all timezones)

Indeed! I am part of HPCCF (HPC certification forum) and at the beginning of the week we had some kind of assembly. In two parts. UK->Americas on Monday [would have turned out as 2am Tuesday for me] UK->NZ on Wednesday [it was still 8pm to 10pm for NZ-ers like me] > On 22/05/2020, at 8:13 AM, Dim

Re: [sage-devel] Pre-Announcement: Global Virtual SageDays 109 - May 28, 2020 (all timezones)

On Thu, May 21, 2020 at 9:04 PM François Bissey wrote: > > Hum. May 21, 19:30GMT = May 22 7:30 NZ time I was in the middle of preparing > breakfast > for the kids and we should go to school shortly. > Needless to say I won’t participate at 7:30am on a Saturday morning. well, yes, it's a well-kno

Re: [sage-devel] Pre-Announcement: Global Virtual SageDays 109 - May 28, 2020 (all timezones)

Hum. May 21, 19:30GMT = May 22 7:30 NZ time I was in the middle of preparing breakfast for the kids and we should go to school shortly. Needless to say I won’t participate at 7:30am on a Saturday morning. François > On 22/05/2020, at 7:57 AM, Matthias Koeppe wrote: > > On Thursday, May 21, 202

[sage-devel] Re: Pre-Announcement: Global Virtual SageDays 109 - May 28, 2020 (all timezones)

On Thursday, May 21, 2020 at 10:04:26 AM UTC-7, Matthias Koeppe wrote: > > The Global Virtual SageDays 109 will be held on May 28, 2020 (all > timezones). > > I have updated https://wiki.sagemath.org/days109 and created the stream > #sd109 on https://zulip.sagemath.org/ > > > People interested in

[sage-devel] Pre-Announcement: Global Virtual SageDays 109 - May 28, 2020 (all timezones)

The Global Virtual SageDays 109 will be held on May 28, 2020 (all timezones). I have updated https://wiki.sagemath.org/days109 and created the stream #sd109 on https://zulip.sagemath.org/ People interested in helping with the organization, or contributing presentations, please respond here or

Re: [sage-devel] Flint-2.6.0 alpha release (testing requested)

I will tag the first release candidate, as already mentioned. I don't like the repo being filled up with tags, so if we are going to use them I'll be keeping them to a minimum. Having tags permanently in there for something that served a purpose for one week only seems horrible to me. Having sa

[sage-devel] Re: [mpir-devel] Re: Flint-2.6.0 alpha release (testing requested)

Thanks Dima! On Thu, 21 May 2020 at 12:31, Dima Pasechnik wrote: > > On Wed, May 20, 2020 at 5:40 PM 'Bill Hart' via mpir-devel > wrote: > > > > Hi again, > > > > Commit a960857c7d8e5ea7c4d4c2958e38ec52778d85d9 of the Flint > > repository [1] is now flint-2.6.0-alpha2 > > > > This is the last c

[sage-devel] Could someone point me to the code that supports math on symbolic equations?

Dear All, I have a use case where I need something lighter weight than the whole of Sagemath. I think SymPy + the ability to handle math on symbolic equations as Sagemath does it might be enough. Thus I wanted to see if I could extract from Sagemath the code supporting math on symbolic expressi

Re: [sage-devel] Flint-2.6.0 alpha release (testing requested)

Le jeudi 14 mai 2020 à 18:51 +0200, 'Bill Hart' via sage-devel a écrit : > The (latest) commit c6319d1d36248f2fc699e833ab2f6fa70d21e906 in the > official Flint repository [1] is flint-2.6.0-alpha1. You could tag it : that would be clearer. Something like "git tag 2.6.0-alpha1" then "git push --t

[sage-devel] Re: [mpir-devel] Re: Flint-2.6.0 alpha release (testing requested)

On Wed, May 20, 2020 at 5:40 PM 'Bill Hart' via mpir-devel wrote: > > Hi again, > > Commit a960857c7d8e5ea7c4d4c2958e38ec52778d85d9 of the Flint > repository [1] is now flint-2.6.0-alpha2 > > This is the last chance for developers working on related projects to > see if Flint works as expected fo

[sage-devel] Re: Are complex numbers ordered?

Thank you for the replies. It seems to me, from reading the replies, that, although this order is not natural from a mathematical point of view, there are programming reasons for it. I am not in a position to assess these reasons but the fact that this comparison has been dropped in Python 3 su