I've opened an issue to create a configure option for system-wide
fricas to be usable with Sage.
https://github.com/sagemath/sage/issues/35837
Please post there details on what you do to use Sage with system-wide
fricas now - this might help.
-- Forwarded message -
From: 'Nasser M
The issue is with this line of the PR:
denom = R.ideal(list(self)).absolute_norm().denominator()
list(self) is a list of polynomials. You want the ideal of the coefficients
of those polynomials.
On Sunday, June 25, 2023 at 3:54:07 PM UTC-5 Jing Guo wrote:
> Hello everyone,
>
> As it is mentio
In investigating an issue with dynatomic_polynomial in dynamical systems, I
came across an odd issue with polynomials with fraction field coefficients.
Here is the condensed version:
K. = Frac(QQ['a'])
P. = ProjectiveSpace(K, 1)
D2=-x^5 + (-3*a^2 + 7*a - 2)/a*x^4*y + (6*a^2 - 12*a + 4)/a*x^3*y^2
On Saturday, June 24, 2023 at 9:20:39 AM UTC-4 Georgi Guninski wrote:
https://sagecell.sagemath.org/
Graph([(0,1)]).vertices()
/tmp/ipykernel_1853928/1298164553.py:1: DeprecationWarning: parameter
'sort' will be set to False by default in the future
See https://github.com/sagemath/sage/issu
On Mon, Jun 26, 2023 at 4:40 PM kcrisman wrote:
> As of https://github.com/sagemath/sage/issues/22349, this argument must be
> explicitly specified (unless a "key" is given); otherwise a warning is
> printed and "sort=True" is used. The default will eventually be changed to
> "False".
>
I thi
In both 9.6 and https://sagecell.sagemath.org/
Graph([('A',1)]).adjacency_matrix()
raises exception
TypeError: '<' not supported between instances of 'int' and 'str'
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On Monday, 26 June 2023 at 16:30:20 UTC+2 Georgi Guninski wrote:
> As of https://github.com/sagemath/sage/issues/22349, this argument must
be explicitly specified (unless a "key" is given); otherwise a warning is
printed and "sort=True" is used. The default will eventually be changed to
"False"
Please read the help message for adjaceny_matrix.
g = Graph([('A',1)])
g.adjacency_matrix?
prints, among other things:
* "vertices" -- list (default: "None"); the ordering of the
vertices defining how they should appear in the matrix. By
default, the ordering given by "Gener
By the way, I see this error message:
TypeError: Vertex labels are not comparable. You must specify an
ordering using parameter ``vertices``
Indeed, this works:
g.adjacency_matrix(vertices=['A', 1])
On Monday, June 26, 2023 at 11:32:56 AM UTC-7 John H Palmieri wrote:
> Please read th
With your data, we get:
sage: K=parent(1/D2)
sage: r=K(D1)
sage: s=K(1/D2)
sage: r.numerator().gcd(s.denominator())
0
and I think that's the zero which leads to the division-by-zero error. Of
course, a 0 returned as gcd is just a bug. It doesn't look like the
coercion framework is really involv
Hey everyone,
I am currently doing my masters thesis on the dimension of cartesian
products of posets and believe I have stumbled upon an alternative approach
to calculate the dimension, that performs better than the one in sage. (No
published results)
C = posets.Crown(2)
C2 = C.produc
Thanks.
In my code, this backwards incompatibility breaks over
150 calls to Graph.vertices() and I suspect
I am not the only one.
I think the root of the problem is the change from python2
to python3. In python2 |["A",1].sort()| works fine, while
it doesn't work in python3.
My recommendation is
Just do a global search-and-replace: change ".vertices()" to
".vertices(sort=True, key=id)" or ".vertices(sort=True, key=str)".
This is not a new change; the deprecation warning has been in place almost
a year, and there was discussion leading up to it. See
https://github.com/sagemath/sage/issu
On Tue, Jun 27, 2023 at 8:48 AM John H Palmieri wrote:
>
> Just do a global search-and-replace: change ".vertices()" to
> ".vertices(sort=True, key=id)" or ".vertices(sort=True, key=str)".
>
Thanks for this.
You are right that I knew about the problems with sort(),
and sage 9.6 is OK for me cur
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