[sage-support] Re: 10.6 crash after installation

Nothing attached. Le vendredi 18 juillet 2025 à 23:37:54 UTC+2, jus...@mac.com a écrit : > Hi, all, > > I just installed 10.6 from the 3-manifolds site. My system is Mac OS > Catalina, 10.15.7, on an Intel MBP (2019). Attached is the crash report. > Immediately after I installed the tarball, I

[sage-support] Re: [Newbie]: Why has function definition changed?

p; Emmanuel for your solution proposals. Regards, Bernd Emmanuel Charpentier schrieb am Dienstag, 25. Februar 2025 um 18:08:15 UTC+1: Complement : Sage’s notation for derivatives is somewhat baroque, and this does not help in the present case. Here, both k and x are functions of t ; writing

[sage-support] Re: [Newbie]: Why has function definition changed?

Complement : Sage’s notation for derivatives is somewhat baroque, and this does not help in the present case. Here, both k and x are functions of t ; writing h as a function of x and k is just an intricate way to write a function of t, unique independent variable. As for notations : what we’

[sage-support] x!=eval("%s"%x)...

The recent evolution of Sage seems to break the print(eval(read)) equivalence : sage: var("a0, a1") (a0, a1) sage: "%s"%a0^a1 'a0^a1' So far so good. But : sage: eval("%s"%a0^a1) --- RuntimeError Traceback (most recent c

Re: [sage-support] Problem using the Sagemath kernel in system's Jupyter

er Python environment your jupyter(lab) > installation is using? > (you may also try ./sage --pip install nbclassic) > > Best > Dima > > On Thu, Jan 23, 2025 at 5:59 AM Emmanuel Charpentier > wrote: > > > > Dear list, > > > > using the Sagemath kernel i

[sage-support] Problem using the Sagemath kernel in system's Jupyter

Dear list, using the Sagemath kernel in system’s Juyter recently stopped working. U used to symlink it in the relevant place of my system’s Jupyter installation (FWIW, /usr/local/share/jupyter/kernels/). This stopped working. I tried to follow the documentation

[sage-support] The sagetex python scripts are not installed. Why ?

In my current installation : charpent@zen-book-flip:~/Temporaire/Latex/sagetex$ ls /usr/local/sage/venv/share/texmf/tex/latex/sagetex/ CONTRIBUTORS py-and-sty.dtx sagetex.dtx sagetex.sty example.tex remote-sagetex.dtx sagetex.ins scripts.dtx However, rebuilding this package in a test directo

Re: [sage-support] Bug/problem evaluating infinite sum

A bit of exploration in the respective interpreters show that neither Maxima, Sage, Giac, Fricas, Sympy nor Mathematica can give an expression for this sum. Wolfram Alpha gives the numerical answer the OP reported, but I have been unable to get any explanation about the process used ; graphics

[sage-support] Problematic bug in `solve` via Maxima

This is new in 10.5.beta6, and seems serious : sage: var("x, y, rho, theta", domain="real") (x, y, rho, theta) sage: Sys=[tan(theta)==y/x, x^2+y^2==rho^2] sage: solve(Sys, (rho, theta)) --- SyntaxError Traceback (most rece

[sage-support] Extend the limit function/method call syntax ?

Motivation in this ask.sagemath.org question . sage: X=var("x", n=3) sage: F=sum(X) ; F x0 + x1 + x2 sage: F.limit(x0=3) x1 + x2 + 3 So far, so good. But sage: F.limit(X[0]=3) Cell In[9], line 1 F.limit(X[Integer(0)]=In

[sage-support] Re: Graph orientations output convention inconsistent

Illustration in this ask.sagemath.org question . HTH, ​ Le jeudi 3 octobre 2024 à 13:06:03 UTC+2, Gordon a écrit : > This is not exactly a bug, but definitely a "gotcha" which will catch many > p

[sage-support] ask.sagemath.org down ?

As of 2024-09-26 07:44:52 CEST, ask.sagemath.org doesn’t answer ; its host doesn’t answer ping : charpent@zen-book-flip:~$ ping ask.sagemath.org PING ask.sagemath.org (194.254.163.53) 56(84) bytes of data. ^C --- ask.sagemath.org ping statistics --- 35 packets transmitted, 0 received, 100% pac

Re: [sage-support] Re: Possible problem with our interfaces to maxima

de(true); > > Regards, > Jan > > > > On Sun, 25 Aug 2024 at 11:25, Dima Pasechnik wrote: > >> >> >> On 25 August 2024 09:52:20 BST, Emmanuel Charpentier < >> emanuel.c...@gmail.com> wrote: >> > >> > >> >*Correction

[sage-support] Re: Possible problem with our interfaces to maxima

7;s heap to serve as input > for the next call, whereas the maxima evaluation loop has its own way of > chaining things together) > > It looks to me it could be made into a ticket/issue. > > On Thursday 22 August 2024 at 04:04:32 UTC-7 Emmanuel Charpentier wrote: > >> Inspired

[sage-support] Possible problem with our interfaces to maxima

Inspired by this ask.sagemath.org question . Compare this Maxima standalone execution : (%i1) display2d:false; (%o1) false (%i2) g: 1/4*((w1^2*w3^2*x1^4*x2^6*x3^8 + 2*(w1^2*w3^2*x1^4*x2^6 + w1^2*w3*x1^3*x2^5)

[sage-support] Re: Problem with minimize_constrained

I filed this issue for your question. An analytical solution : # Potential extrema : points where all first derivatives are zero. PE = [{u:d[u].n() for u in d.keys()} for d in solve([G(x, y).diff(u) for u in (x, y)], (x, y), solution_dict=True)]

[sage-support] Support JupyterLab debugging interface ?

A question on ask.sagemath.org raises an interesting issue : - “Our” Jupyterlab supports the debugging interface offered to Jupyter (zmq ?) kernels (e. g. one can use it with the “standard” Python kerne

[sage-support] Re: View does not work

The Sage wiki has a relevant section . I found it useful. HTH, ​ Le dimanche 23 juin 2024 à 05:37:52 UTC+2, Trey Davis a écrit : > I use wsl with Ubuntu 22.04.3 LTS installed. I installed sage from source > code (SageMath version 10.4.beta9.) View does

[sage-support] Re: A problematic dictionary update (possible Maxima problem)

0), log(-sqrt(($0 + 1)/($0 - 1))): arccoth($0), log(sqrt(($0 + 1)/($0 - 1))): arccoth($0)} But the need for this workaround makes me suspect thai it might not be as useful as I wish it would be… Hints ? Ideas ? [ Even lazzi are welcome… ] ​ Le samedi 1 juin 2024 à 22:11:43 UTC+2, Emmanuel Charpentier

[sage-support] A problematic dictionary update (possible Maxima problem)

Context : finding patterns of explicit forms of inverse (hyperbolic|trigonometric) functions for simplification. Simple solution : reset() y=SR.var("y") IL = [] w0=SR.wild(0) L=[sin, cos, tan, csc, sec, cot, sinh, cosh, tanh, csch, sech, coth] for f in L: R=(f(y)==x).solve(y)[0].rhs() for s i

Re: [sage-support] Is there a way to use Sage's Jupyter outside the sage shell ?

Le mardi 9 avril 2024 à 02:24:45 UTC+2, Dima Pasechnik a écrit : [ Snip… ] Actually, the best way to solve this would be to get rid of Jupyter as a part of Sage the distribution. Agreed. Since I “seriously” configured Sage a lng time ago, I missed the rise of the .configure options allow

[sage-support] Is there a way to use Sage's Jupyter outside the sage shell ?

Setup : Sage 10.4.beta1 running on Ubuntu 22.04 LTS under WSL2 in Windows 11 (don’t get me started…). I also installed emacs and its juyter package, which is able to use Sage-installed kernels … when emacs is started from the Sage shell. [ Yes, there

[sage-support] Re: Successful plots (without notebook) on Windows?

Le mardi 2 avril 2024 à 21:13:50 UTC+2, kcrisman a écrit : On Monday, April 1, 2024 at 3:31:44 PM UTC-4 Emmanuel Charpentier wrote: I just had to install Sage on a Windows machine (long story…) which has to be connected to a corporate VPN, whose an annoying side effect is to deprive Linux apps

[sage-support] Re: Successful plots (without notebook) on Windows?

I just had to install Sage on a Windows machine (long story…) which has to be connected to a corporate VPN, whose an annoying side effect is to deprive Linux apps of network connectivity (don’t get me started…). Therefore, the Linux browser couldn’t use Mathjax. Using your utilities works per

[sage-support] Re: init.sage not running anymore

FWIW, Someone going under the nickname of stillconfused posted alpost exactly the same problem on ask.sagemath.org. Is that you ? ​ Le dimanche 3 mars 2024 à 21:40:50 UTC+1, David Ayotte a écrit : > Hello, > > Since I u

Re: [sage-support] Issues with real precision

mething useful today… On Saturday 24 February 2024 at 13:54:51 UTC Emmanuel Charpentier wrote: Le vendredi 23 février 2024 à 23:23:20 UTC+1, Dima Pasechnik a écrit : [ Snip…] the normal Python way, without any symbolic sum, would be like this: sage: sage: g(n,k,r)=(-1)^(k)*binomial(n,k)*(n-k)^

Re: [sage-support] Issues with real precision

Le vendredi 23 février 2024 à 23:23:20 UTC+1, Dima Pasechnik a écrit : [ Snip…] the normal Python way, without any symbolic sum, would be like this: sage: sage: g(n,k,r)=(-1)^(k)*binomial(n,k)*(n-k)^r/n^r : sage: def f(n,r): return math.fsum([1.0*g(n,k,r) for k in range(n+1)]) : sage:

[sage-support] Re: Why cant this limit be evaluated?

Indeed. That’s probably an oversight : sage: elliptic_kc(x).limit(x=0) 1/2*pi sage: elliptic_ec(x).limit(x=0) limit(elliptic_ec(x), x, 0) Curioisly : sage: elliptic_ec(0) 1/2*pi FWIW : sage: D(r)._mathematica_().Limit(mathematica.Rule(r, 0)) -1/8 HTH, ​ Le lundi 19 février 2024 à 21:25:51

[sage-support] Developer's guide and configure : the list of packages needs some updating

For installation from source on Debian, a few packages have incorrect names in the Developer’s guide (and possibly in the configuration process files) : | Replace | with | ++--| | beautifulsoup4 | python3-bs4 | | cython | cython3

[sage-support] Re: Sage seems to incorrectly evaluate fractional powers of complexes

ay, January 4, 2024 at 10:29:56 AM UTC Emmanuel Charpentier wrote: > >> The problem seems Sage-specific : the same systems solve correctly (up to >> numerical noise) in “pure” Maxima : >> ;;; Loading #P"/usr/lib/x86_64-linux-gnu/ecl-21.2.1/sb-bsd-sockets.fas"

[sage-support] Re: Sage seems to incorrectly evaluate fractional powers of complexes

024 à 10:21:31 UTC+1, Emmanuel Charpentier a écrit : > Motivation : see [this post], which shows a case where Sage fails to find > the roots of a three equations system. > > I signalled in this thread that Sympy was able to find these roots. But I > stumbled on a difficulty checking thes

[sage-support] Re: limitations of "solve"?

These systems and Sage’s “solutions” exhibit some *serious* problems. See there <https://groups.google.com/g/sage-support/c/gGssS_15jxE>… ​ Le mardi 2 janvier 2024 à 12:30:14 UTC+1, Emmanuel Charpentier a écrit : > FWIW, a working workaround this interesting Maxima quirk (bug ?)

[sage-support] Re: limitations of "solve"?

These systems and Sage's "solutions" exhibit some *serious* problems. See [there](https://groups.google.com/g/sage-support/c/gGssS_15jxE)... Le mardi 2 janvier 2024 à 12:30:14 UTC+1, Emmanuel Charpentier a écrit : > FWIW, a working workaround this interesting Maxima quirk

[sage-support] Sage seems to incorrectly evaluate fractional powers of complexes

Motivation : see [this post], which shows a case where Sage fails to find the roots of a three equations system. I signalled in this thread that Sympy was able to find these roots. But I stumbled on a difficulty checking these solutions. Set up the systems : # Pretext : https://groups.google.

[sage-support] Re: limitations of "solve"?

FWIW, a working workaround this interesting Maxima quirk (bug ?) is to use sympy, as demonstrated here

[sage-support] Re: A nice (minor ?) bug ?

Never ming : this has been reported <https://github.com/sagemath/sage/issues/35489> six months ago… Sorry for the noise… ​ Le vendredi 22 décembre 2023 à 06:51:59 UTC+1, Emmanuel Charpentier a écrit : > Seen in 10.3.beta3 : > sage: show_identifiers() :1: > DeprecationWar

[sage-support] A nice (minor ?) bug ?

Seen in 10.3.beta3 : sage: show_identifiers() :1: DeprecationWarning: Importing Euler_Phi from here is deprecated; please use "from sage.arith.misc import Euler_Phi" instead. See https://github.com/sagemath/sage/issues/30322 for details. show_identifiers() ---

[sage-support] Re: Problem with plot

Le mercredi 13 décembre 2023 à 12:35:42 UTC+1, Philippe Delavalade a écrit : Hi. I'm using sage-10.2 with linux (slint-15.0 based on slackware 15.0) on the console. When I run p=plot(x^2); p there is no graphics on the screen, just the line Launched png viewer for Graphics object consist

[sage-support] Re: factor((A-B)*(B-C)).list() ?

sage: var("a, b, c") (a, b, c) sage: foo=(a-b)*(b-c) ; foo (a - b)*(b - c) Note that : sage: foo.expand() a*b - b^2 - a*c + b*c >From foo.list? : Docstring: Return the coefficients of this symbolic expression as a polynomial in x. INPUT: * "x" -- optional variable. OUTPUT: A list of expressio

[sage-support] Re: factor((A-B)*(B-C)).list() ?

``` sage: var("a, b, c") (a, b, c) sage: foo=(a-b)*(b-c) ; foo (a - b)*(b - c) ``` Note that : ``` sage: foo.expand() a*b - b^2 - a*c + b*c ``` >From `foo.list?` : ``` Docstring: Return the coefficients of this symbolic expression as a polynomial in x. INPUT: * "x" -- optiona

[sage-support] Re: factor((A-B)*(B-C)).list() ?

FWIW : sage: var("a, b, c") (a, b, c) sage: ((a-b)*(b-c)) (a - b)*(b - c) sage: ((a-b)*(b-c)).list() [-b^2 + b*c, b - c] sage: ((a-b)*(b-c)).operands() [a - b, b - c] HTH, ​ Le lundi 23 octobre 2023 à 18:23:32 UTC+2, Rolandb a écrit : > Hi, > > I am surprised by the output (9.8 and 10.1 Ubu

[sage-support] (Possible) bug in solving a simple complex equation.

Consider : sage: reset() sage: z=var("z") sage: Eq=(3+4*I)^2-2*(z.conjugate())==z ; Eq -2*conjugate(z) + 24*I - 7 == z sage: Sol=solve(Eq, z) ; Sol [z == (8*I - 7/3)] sage: Eq.subs(Sol[0]) (40*I - 7/3) == (8*I - 7/3) sage: bool(Eq.subs(Sol[0])) False which annoys me *immensely*. It reeks of

Re: [sage-support] Possible bug in the mathematica interface

Sum[%s, %s]"%tuple(map(lambda u:repr(mathematica(u)), > ((1+(-1 > : )^k)*x^k, [k , 0, oo] > -2/(-1 + x^2) > > sage: mathematica.Sum(*map(mathematica, ((1+(-1)^k)*x^k, [k , 0, oo]))) > {(1 + (-1)^k)*k*x^k, 0, (1 + (-1)^k)*x^k*Infinity} > > On Sun, 9 Jul 2023 at 23:01, Em

[sage-support] Possible bug in the mathematica interface

Inspiration : this ask.sagemath.org question . Using the Wolfram engine gives me a curious and nonsensical conversion. Compare : sage: mathematica("Sum[%s, %s]"%tuple(map(lambda u:repr(mathematica(

[sage-support] A possibly serious problem in the Maxima interface.

The new issue #35541 , inspired by this `ask.sagemath.org question reports a non-insignificant discrepancy between Maxima’s behaiour of its solver and what our interface repor

Re: [sage-support] How to convert complex_root_of to QQbar (algebraic number)

Le vendredi 31 mars 2023 à 15:19:51 UTC+2, William Stein a écrit : [ Snip… ] Meta comment -- I added this "Help me fix this..." feature to cocalc jupyter notebooks a week ago, and it's been extremely popular with 1000+ uses a day. It's exactly the sort of thing that ChatGPT can be very helpf

[sage-support] Re: mathematica_console() command not working

mathematica_console() does not indeed exist. but mathematica.console() does (and so does mathematica.interact(), which might be what you are really searching…). ​ Le jeudi 19 janvier 2023 à 11:13:28 UTC+1, pvit...@gmail.com a écrit : > Using Sage 9.7 installed in Arch Linux over WSL2 in Window

[sage-support] cython_lambda not usable in practice

Inspired by this ask.sagemath.org question . Let sage: f = x^2*sin(x) - cos(x)*e^(-x) + log(x^2 + 1) - log(sqrt(1991)) Then, one would may like to accelerate f evaluation via cythoniz

[sage-support] Re: gridlines in 3d ?

Le mardi 17 janvier 2023 à 07:21:08 UTC+1, roger...@gmail.com a écrit : I am not sure if it is exactly what you are looking for, but a few months ago I wrote some lines of code to create a frame with gridlines for 3D plots. [image: plot_frame3d.png] See the link

Re: [sage-support] solve solution is this a bug?

In Google Groups, I can’t see the screenshot nor the notebook, but this is a FAQ, so I risk an answer : solve, used without algorithm= uses Maxima’s solver. The latter may introduce new variables to denote unknown, arbitrary, quantities : “zxxx” denote integer arbitrary constants, “rxxx” deno

Re: [sage-support] Plot doesn't respect numerical precision specification.

décembre 2022 à 14:23:48 UTC+1, Emmanuel Charpentier a écrit : > Le mardi 6 décembre 2022 à 14:16:56 UTC+1, dim…@gmail.com a écrit : > > It's plotting via matplotlib, perhaps that's why the precision setting is >> ignored (or pehaps something like RDF is hardcoded in Sage

Re: [sage-support] Plot doesn't respect numerical precision specification.

ed in the lambda expression in the third example isn’t accepted : matplotlib should see the RR values returned by it (which *do* accept the precision specification). > > On Tue, Dec 6, 2022 at 12:53 PM Emmanuel Charpentier < > emanuel.c...@gmail.com> wrote: > >> Question already

[sage-support] Plot doesn't respect numerical precision specification.

Question already asked on |`ask.sagemath.org`](https://ask.sagemath.org/question/64934/plotting-ill-conditionned-function/), where it didn't attract a lot of attention... Let ``` sage: f(x)=log(tan(pi/2*tanh(x))).diff(x) ; f x |--> -1/2*pi*(tan(1/2*pi*tanh(x))^2 + 1)*(tanh(x)^2 - 1)/tan(1/2*p

Re: [sage-support] Re: Sagecell : is it possible to install the Wolfram engine ?

William, Le mercredi 30 novembre 2022 à 18:00:22 UTC+1, wst...@gmail.com a écrit : > On Wed, Nov 30, 2022 at 1:26 AM Dima Pasechnik wrote: > > > > On Sat, Nov 19, 2022 at 7:59 PM William Stein wrote: > > > > > > On Sat, Nov 19, 2022 at 11:25 AM kcrisman wrote: > > > > > > > > Though see

Re: [sage-support] Re: Sagecell : is it possible to install the Wolfram engine ?

*Timeo advocatos a communa lege loquentes... *The relevant precedents in (what passes for) american law strongly hint at a very complicated resolution (which would enrich lawyers and nobody else...). I do not know if William's analysis is right, but it seems to be *prudent*, and therefore a sou

Re: [sage-support] Re: Rendering tables in jupyter notebook

ntation choices, and, for example, systematically rewrite `1/sqrt(2)` as `sqrt(2)/2`. Even if you sacrifice a goat ;-)... > Regards > G > > On Sun, Nov 20, 2022 at 3:36 PM Emmanuel Charpentier < > emanuel.c...@gmail.com> wrote: > >> > How can I ask Sage to place e

[sage-support] Re: Rendering tables in jupyter notebook

> How can I ask Sage to place each factorization in the right column on a single line. Both the display in a console and the LaTeX display given by `view` are single-lined. I can reproduce your problem in Jupyter ; therefore, I think that the question should be directed to a Jupyter-centered ma

[sage-support] Re: Listing elements of a finite ring.

No predefined method, but listing S’s elements seems easy : sage: R1.=GF(97)[] sage: p=lambda x:x^2+2 sage: S=R1.quotient(p(t),'a') sage: L=[u for u in S] sage: len(L) 9409 HTH, ​ Le dimanche 20 novembre 2022 à 07:39:27 UTC+1, gauri...@gmail.com a écrit : > I am afraid I cannot seem to find th

[sage-support] Sagecell : is it possible to install the Wolfram engine ?

Dear list Now that the *gratis* (but by no means free) [Wofram engine](https://www.wolfram.com/engine/) can be used for "pre-production" projects, it seems to me that it *could* be installed on `sagegell.sagemath.org`, this allowing access to the `algorithm="mathematica"` options and, more gen

[sage-support] Re: Plotting the solution returned by desolve

Try this : sage: var("x, t") ## t will be used later (x, t) sage: y=function("y") ## Note : no default argument sage: sol=desolve(diff(y(x),x)==(x*y(x)^2 - cos(x)*sin(x) )/(y(x)*(1 - x^2)) ,y(x), ics=[0, 2]) ; sol ## Note : specify y argument 1/2*(x^2 - 1)*y(x)^2 + 1/2*cos(x)^2 == (-3/2) sage:

[sage-support] Re: Somethog in rotten is the state of Maxima...

age: Chk0f True You are right…. ​ Le jeudi 3 novembre 2022 à 16:51:31 UTC+1, Emmanuel Charpentier a écrit : > Le jeudi 3 novembre 2022 à 12:59:48 UTC+1, axio…@yahoo.de a écrit : > > @Emmanuel, why are you saying that FriCAS returns the same as sage? >> > I tried solve(Sys0, IVars

[sage-support] Re: Somethog in rotten is the state of Maxima...

s your execution *especially* how to convert the result back to Sage ? Martin > > On Sunday, 9 October 2022 at 18:43:03 UTC+2 Emmanuel Charpentier wrote: > >> It turns out that the original author has also posted this problem in >> sage-devel <https://groups.google.com/g/s

[sage-support] Re: Plotting heat maps of scalar fields in SAGE

That can be done in Sage in a variety of ways . Here’s one : var("x, y") L = 3# Plotted function f =lambda x,y:cos(x)-2*y# Coloring# Colormap cm=colormaps["RdBu"]# We have to scale the colormap :# Range of values : possible shortcut via some analytical obviousnesses :# cmin = f(-3, 3).n()# cma

[sage-support] Re: Somethog in rotten is the state of Maxima...

It turns out that the original author has also posted this problem in sage-devel <https://groups.google.com/g/sage-devel/c/6jIKV1hPoCQ>, wher we should continue… ​ Le dimanche 9 octobre 2022 à 18:27:54 UTC+2, Nils Bruin a écrit : > On Sunday, 9 October 2022 at 08:45:36 UTC-7

[sage-support] Somethog in rotten is the state of Maxima...

... and all is not fresh in Sympy's realm either. Full details in [this ask.sagematjh.org question](https://ask.sagemath.org/question/64344/solving-a-system-of-linear-equations-with-complex-numbers-yields-false-solution/?answer=64363#post-id-64363). TL;DR : a linear system, perfectly solved by S

[sage-support] Sagetex version ?

I do not understand my installation of sagetex. As far as I understand it, Sage will use the files accessible via $SAGE_ROOT/venv/share/texmf/tex/latex/sagetex, and that’s what I symlinked to my LaTeX setup (in /usr/local/share/tex/latex/ in a Debian testing installation). However, this vers

[sage-support] Re: Solving system of Linear Equatin over finite fields.

Your example has several problems : 1) You don’t define your polynomial indeterminates ; you should Rx.inject_variables(). 2) The syntax you use to substitute values in f is questionable… 3) f(v) is a polynomial in x0..x9 over GF(7), *not* a symbolic expression. Therefore f(v)==1 is *not* a

Re: [sage-support] Unexpected result for cos(a)^2 + sin(a)^2, question about variables

Also : sage: b.simplify_trig() 1 Using specific simplifications in a specific order is often the key to get interesting results that the brute-force simplify_full cannot. Such simplifications are : sage: import re sage: print(", ".join([v[0] for v in list(map(lambda u:re.findall(".*simplify

[sage-support] Re: \ZZ not defined

This means that Mathjax, which is used by Jupyter to interpret LaTeX expressions, has no definition of a `\ZZ` LaTeX macro. On 9.6.rc0, I get `\Bold𝑍/6\Bold𝑍`, which is not interpreted by `mathjax` either. I don't know how to work around this with Mathjax. Would you mind filing a ticket ? Le l

Re: [sage-support] Solving logarithmic equations

BTW : sage: solve(1+2*log(x+1, 4)==2*log(x,2), x, to_poly_solve="force") [x == -sqrt(3) + 1, x == sqrt(3) + 1] HTH, ​ Le samedi 9 avril 2022 à 11:34:10 UTC+2, wdjo...@gmail.com a écrit : > On Sat, Apr 9, 2022 at 5:18 AM Paolo Robillos > wrote: > > > > Hi, > > > > I am trying to solve the fol

[sage-support] Re: search_def(), search_src() are not working in Sage

How did you install Sage ? And on what platform ? Le mercredi 23 mars 2022 à 06:37:20 UTC+1, adarsh.k...@gmail.com a écrit : > Hello everyone, > I was going through some of the Sage functions and I wanted to look it up > in the source file definitions. For this I tried search_def() and then > s

Re: [sage-support] Re: 2 questions on var

even more simpler :-) : sage: V=var("v", n=8) sage: V (v0, v1, v2, v3, v4, v5, v6, v7) sage: v2 v2 sage: V[2] v2 *“Who could ask for anything more ?”* ​ Le mardi 8 mars 2022 à 08:20:07 UTC+1, slelievre a écrit : > Even more practical, I find, is to name the tuple of indexed variables: > ``

Re: [sage-support] nonlinear equation system

Or (unexpectedly much simpler) : ``` sage: mathematica.Reduce(Sys, Vars) False ``` Le jeudi 3 mars 2022 à 15:09:27 UTC+1, Emmanuel Charpentier a écrit : > And, BTW : > > sage: mathematica("Sys = {%s}"%", ".join([u._mathematica_init_() for u in > Sys])) > {

Re: [sage-support] nonlinear equation system

+ T^2 == 1/2, -(EE*RR) + F*T - 2*J*T == 0, II^2 - J^2 - RR^2 + T^2 == -1} sage: mathematica("Vars = {%s}"%", ".join([u._mathematica_init_() for u in Vars])) {A, B, EE, F, II, J, RR, T} sage: mathematica("Reduce[Sys, Vars]") False HTH, ​ Le jeudi 3 mars 2022 à 15:0

Re: [sage-support] nonlinear equation system

FWIW, executing : reset() # Don't scratch Sage's predefined identifiers, for sanity's sake... Vars= var('A B EE F II J RR T') eq1 = A*EE-B^2-B*F+EE^2==1 eq4 = A*II-B*J+II^2+RR^2==-1/2 eq5 = A*RR-B*T+2*RR*II==0 eq6 = B*II-EE*J+II*J+RR*T==0 eq8 = -B*RR+EE*T-RR*J-II*T==0 eq9 = EE*II-F*J+J^2+T

[sage-support] Re: mathematica_free error

I have had similar problems. Wolfram may have changed (again !) something in their output format... Since I know zilch about HTML mysteries and miseries, I can't offer anything but my warmest condolences... Le lundi 14 février 2022 à 17:17:20 UTC+1, rodrigos...@gmail.com a écrit : > Good aftern

[sage-support] Re: Inter-versions reproducibility problem of random elements.

Also : coud you report the results on as many platforms and/or versions as possible ? Le dimanche 6 février 2022 à 20:23:39 UTC+1, Emmanuel Charpentier a écrit : > Seen in this thread > <https://groups.google.com/g/sage-support/c/IvjMhqryRQs> : > > On Sagecell <https://

[sage-support] Inter-versions reproducibility problem of random elements.

Seen in this thread : On Sagecell : print(sage.version.version) with seed(0): M = matrix(AA, 3, 3, lambda u,v: AA.random_element()) M.apply_map(lambda u:u.radical_expression()) prints 9.4 [-2 2 -2] [-2

Re: [sage-support] Re: Eigen spaces of algebraic matrices broken ?

Nins and me got *different* random matrices : his was composed of integers in (-2..2), and Sage could compute its eigenspaces ; mine was : sage: with seed(0): M = matrix(AA, 3, 3, lambda u,v: AA.random_element()) sage: M.apply_map(lambda u:u.radical_expression()) [ -sqrt(2) - 1

[sage-support] Re: Eigen spaces of algebraic matrices broken ?

That was my initial complaint... ;-) Le samedi 5 février 2022 à 18:05:42 UTC+1, alan_thoma...@yahoo.co.uk a écrit : > M.eigenvalues() never returns. > On Saturday, February 5, 2022 at 11:48:47 AM UTC Emmanuel Charpentier > wrote: > >> What exactly fails in the example ? &

[sage-support] Re: Eigen spaces of algebraic matrices broken ?

, February 3, 2022 at 6:44:47 AM UTC Emmanuel Charpentier wrote: > >> Le mercredi 2 février 2022 à 22:15:00 UTC+1, Nils Bruin a écrit : >> >> On Monday, 31 January 2022 at 15:19:49 UTC-8 Emmanuel Charpentier wrote: >>> >>>> As advertised, an atempt at a mi

[sage-support] Re: Eigen spaces of algebraic matrices broken ?

Le mercredi 2 février 2022 à 22:15:00 UTC+1, Nils Bruin a écrit : On Monday, 31 January 2022 at 15:19:49 UTC-8 Emmanuel Charpentier wrote: > >> As advertised, an atempt at a minimal (non-)working example : >> >> # Reproducible minimal example >> with seed(0): M =

[sage-support] Re: init_printing from sympy is no longer working in SageCell

WorksForMe(TM) in Sage 9.5, in both Jupyter and Jupyterlab... HTH, Le mercredi 2 février 2022 à 18:42:48 UTC+1, dsfitz...@gmail.com a écrit : > I'm teaching a linear algebra course where we use the Sympy Python package > for a lot of the computations. This includes a PreTeXt textbook where there

[sage-support] Re: Eigen spaces of algebraic matrices broken ?

See lines #7-8 of the "Minimal example" : Le mercredi 2 février 2022 à 11:57:41 UTC+1, alan_thoma...@yahoo.co.uk a écrit : > > What is v0? When I run the above it isn't defined. > On Monday, January 31, 2022 at 11:19:49 PM UTC Emmanuel Charpentier wrote: > >&

[sage-support] Re: Eigen spaces of algebraic matrices broken ?

, line 23641, in cypari2.gen.Gen_base.nfinit KeyboardInterrupt: 1.000?*v0 - 35.57125011095806?*v1 - 492.8896998473554? Similarly, V00.coefficient(v0).is_one() “never returns”. The current aritmetic on algebraics is therefore problematic for this kind of problems. Suggestions ? ​ Le

[sage-support] Re: Eigen spaces of algebraic matrices broken ?

rday, 29 January 2022 at 13:51:14 UTC-8 Emmanuel Charpentier wrote: > >> /usr/local/sage-9/local/var/lib/sage/venv-python3.9/lib/python3.9/site-packages/sage/rings/qqbar.py >> >> in pari_field(self) >> >>>3134 if self._pari_field is N

[sage-support] Re: Eigen spaces of algebraic matrices broken ?

+1, Emmanuel Charpentier a écrit : > The promlem seems tolie wit (my use of) polynomial rings to compute the > eigenvectors. Manually, after executing > > dims = M.dimensions() > if dims[0] != dims[1]: raise DomainError("Not a square matrix !") > dim = dims[0] > BR

[sage-support] Re: Eigen spaces of algebraic matrices broken ?

rings/qqbar.py in pari_field(self) 3134 if self._pari_field is None: 3135 pari_pol = self._field.pari_polynomial("y") -> 3136 self._pari_field = pari_pol.nfinit(1) 3137 return self._pari_field 3138 cypari2/auto_gen.pxi in cypari2.ge

[sage-support] Eigen spaces of algebraic matrices broken ?

Setup : Sage 9.5.rc1 running in Debian testing on core i7 + 16 GB RAM. def test(Size=2, Ring=QQ): from time import time as stime with seed(0): M = matrix(Ring, Size, Size, lambda u, v:Ring.random_element()) t0 = stime() SL = M.eigenspaces_left(algebraic_multiplicity=True)

Re: [sage-support] Problem in running SageMath application

Le samedi 15 janvier 2022 à 10:52:52 UTC+1, slelievre a écrit : > 2022-01-15 09:05:10 UTC, Dima Pasechnik: > > > > what is "Gilbert Source"? > > I would bet some auto-respelling software thought > that was a nice way to reinterpret "GitHub releases" > to make the conversation interesting. --Samue

Re: [sage-support] Re: Snowman

Homework ? Le vendredi 14 janvier 2022 à 19:41:05 UTC+1, iva.po...@gmail.com a écrit : > Sorry, here is the picture how snowman has to look like..I started drawing > with a Sphere, but I can't get it like in the picture. > > -- You received this message because you are subscribed to the Googl

[sage-support] Re: Problem iniciating sage

You are trying to run Sage on a virtual machine. This Linix virtual machine requires you to log in. I note that this virtual machine runs Linux 2.6.32 on a 32-bit virtual machine, which is downright paleontologic... Are you trying to run a pre-packaged "appliance" ? Those weren't updated for a

[sage-support] Re: Sage Crash report (again...)

n installation problem occurring on a previously-working system. Thank you for your attention. ​ Le samedi 18 décembre 2021 à 10:44:07 UTC+1, Emmanuel Charpentier a écrit : > Same circumstances as in the previous case : on Debian testing running on > core i7 + 16 GB RAM, after upgrading Sage

[sage-support] Sage Crash report (again...)

Same circumstances as in the previous case : on Debian testing running on core i7 + 16 GB RAM, after upgrading Sage 9.5.beta7 compiled from a git tree  to 9.5.beta8, Sage crashes at startup. Crash report enclosed I'll try the same steps as in the last occurrence... -- Emmanuel Charpe

[sage-support] Re: Bug in integrals

A nice one, indeed. Here, Sage seems to use Maxima’s integrator : sage: table([[u,(f(x)-g(x)).integrate(x,algorithm=u)] for u in ["maxima", "sympy", "giac", "fricas", "mathematica_free"]], header_row=["Algorithm", "Indefinite integral"]) Algorithm Indefinite integral +--

[sage-support] Re: Bug in integrals

Le mercredi 15 décembre 2021 à 20:43:07 UTC+1, juanlui...@gmail.com a écrit : > See this example: > > f(x)=(x+sin(3*x))*exp(-3*x*I) > g(x)=f(x).expand() > integral(f(x)-g(x),(x,0,2*pi)) > > The answer is I*pi, but it should be 0. > Huh ? f has no poles ; therefore, the value of the integrate be

[sage-support] Re: Deprecation warning when calling certain symbolic commands on Ubuntu 21.10 but not on 20.04 (SageMath 9.4)

Aichmayr a écrit : > It happens in command line and in jupyter notebook (firefox). > > On Monday, December 13, 2021 at 11:36:24 PM UTC+1 Emmanuel Charpentier > wrote: > >> Smells of an interface problem... >> >> Are you using a notebook, the command line or another i

[sage-support] Re: Deprecation warning when calling certain symbolic commands on Ubuntu 21.10 but not on 20.04 (SageMath 9.4)

Smells of an interface problem... Are you using a notebook, the command line or another interface (e. g. sage_shell_mode in emacs) ? If notebook, which browser do you use ? Le lundi 13 décembre 2021 à 20:31:48 UTC+1, Marcus Aichmayr a écrit : > Hi, > > I'm using SageMath 9.4 on both Ubuntu 20.0

Re: [sage-support] Re: Sage crash report

anything when I stop-and-close a Jupyter notebook. Thoughts ? ​ Le vendredi 10 décembre 2021 à 16:39:53 UTC+1, Emmanuel Charpentier a écrit : > make giac-clean && make did it ! > > (*Alla cinese*) 10^4 thanks ! > ​ > Le vendredi 10 décembre 2021 à 11:56:00 UTC+1, d

Re: [sage-support] Re: Sage crash report

r sure. > > On Fri, Dec 10, 2021 at 10:36 AM Emmanuel Charpentier > wrote: > > > > > > > > Le vendredi 10 décembre 2021 à 01:04:33 UTC+1, Matthias Koeppe a écrit : > >> > >> "make sagelib-clean" will fix this > > > > > > N

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