More generally uf all the coefficients can be coerced into AA then the
roots in QQbar not in AA come in pairs.
On Wed, 22 Sep 2021, 09:23 Dima Pasechnik, wrote:
>
>
> On Wed, Sep 22, 2021 at 9:19 AM Dima Pasechnik wrote:
>
>>
>>
>> On Wed, Sep 22, 2021 at 8:10 AM Tracy Hall wrote:
>>
>>> I
On Wed, Sep 22, 2021 at 8:10 AM Tracy Hall wrote:
> I ran into an assertion error when trying to return a sorted list whose
> key was a certain linear combination of eigenvalues of the Laplacian matrix
> over graphs on nine vertices. Digging into it a bit, the failure happened
> when comparing
On Wed, Sep 22, 2021 at 9:19 AM Dima Pasechnik wrote:
>
>
> On Wed, Sep 22, 2021 at 8:10 AM Tracy Hall wrote:
>
>> I ran into an assertion error when trying to return a sorted list whose
>> key was a certain linear combination of eigenvalues of the Laplacian matrix
>> over graphs on nine
I ran into an assertion error when trying to return a sorted list whose key
was a certain linear combination of eigenvalues of the Laplacian matrix
over graphs on nine vertices. Digging into it a bit, the failure happened
when comparing an algebraic real number against the same number that was
-- Forwarded message -
From: Fernando Q. Gouvea
Date: Wed, Sep 22, 2021 at 12:26 PM
Subject: Re: [sage-support] Sage 9.3 for Windows crashing
To: William Stein
At this point, only plotting has caused the problem. For example:
sage: K=Qp(7)
sage: K
7-adic Field with capped
Update: the problem is machine-dependent. On one Dell laptop, plot works
with no problem. On a different one, big crash.
Fernando
On 9/22/2021 3:49 PM, William Stein wrote:
-- Forwarded message -
From: Fernando Q. Gouvea
Date: Wed, Sep 22, 2021 at 12:26 PM
Subject: Re:
I just had SageMath 9.2 crash, so I tried installing 9.3. Alas, I get
the same problem. The offending command is pretty innocuous:
sage: plot(ln(1+x),(-1,5))
The Sage window then crashes. In the notebook I get a message that the
kernel just died. Running it in the Sage Terminal, sage crashes
On Wed, Sep 22, 2021 at 11:36 AM Fernando Q. Gouvea wrote:
>
> I just had SageMath 9.2 crash, so I tried installing 9.3. Alas, I get the
> same problem. The offending command is pretty innocuous:
>
> sage: plot(ln(1+x),(-1,5))
>
> The Sage window then crashes. In the notebook I get a message
I wondered whether the not-obviously-real output of roots(QQbar) were
related to the cause of the but, too, but I have seen other polynomials
with all real roots for which roots(QQbar) gives one or several roots that
instead of showing as exactly real are displayed with an imaginary part
that
