Re: [sage-support] Re: \ZZ not defined
Thanks Emmanuel, this is https://trac.sagemath.org/ticket/33729 Guillermo On Mon, 18 Apr 2022 at 23:14, Emmanuel Charpentier < emanuel.charpent...@gmail.com> wrote: > 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 `\Bold푍/6\Bold푍`, 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 lundi 18 avril 2022 à 13:11:22 UTC+2, list...@gmail.com a écrit : > >> >> This is on SageMath 9.5, Jupyter notebook. >> >> Am I missing something? >> >> Guillermo >> > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/CANnG1888sQTc94-iUbFB%2BGm_0kq2nMONKo2YGN%2BMFf_fG8cZuw%40mail.gmail.com.
[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 `\Bold푍/6\Bold푍`, 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 lundi 18 avril 2022 à 13:11:22 UTC+2, list...@gmail.com a écrit : > > This is on SageMath 9.5, Jupyter notebook. > > Am I missing something? > > Guillermo > > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/f0d17420-2dbd-4b77-bf83-b3053a668a05n%40googlegroups.com.
Re: [sage-support] Re: Removing packages and different versions of python
Thanks, that answers my questions! Le 15/04/2022 à 20:00, Matthias Koeppe a écrit : On Friday, April 15, 2022 at 12:39:23 AM UTC-7 Jean-Florent Raymond wrote: In order to test something I would like to remove from my sage install a python package that I installed (and updated) some time ago. First question: How can I remove a package installed with "sage -i"? I found instructions in the doc to install packages, but nothing to remove them. Is "sage -i" the same as "sage -pip install" (and "pip install" in a "sage -sh" session), so I can simply do "sage -pip uninstall"? To uninstall a package SPKG, use either "make SPKG-clean" or "make SPKG-uninstall" - depending on the package source type (see https://doc.sagemath.org/html/en/developer/packaging.html#package-source-types). (We are in the process of unifying this - https://trac.sagemath.org/ticket/29097) When checking if there remain some files named after this package after the "sage -pip uninstall" command, I can see that the package is still installed in: sage/local/lib/python3.7/site-packages/ sage/local/lib/python3.9/site-packages/ I guess because I installed it when the python version of my sage install was 3.7 or 3.9 (currently it is 3.10.3). I don't think there is a reason to keep this, hence my second question : how to remove this given that I don't have python3.7 or python3.9 anymore in sage-sh ? Can I just rm everything in sage/local/lib/python3.7 and sage/local/lib/python3.9? Yes, you can safely "rm" it. Last question: what does "spkg" mean :) ? I think it just means "Sage package". Is it just any package that can be installed to use with Sage, some of which are standard python (pip-installable) packages and some with different install scripts? Yes. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/b34e8687-012a-195c-fbd4-e9bb21a47824%40uca.fr.
Re: [sage-support] Matrix logarithm
On Mon, 18 Apr 2022 at 14:30, GUSTAVO TERRA BASTOS wrote:
>
> Hi guys.
>
> Given two n x n matrices M, N, we know it is a big problem to find the
> positive integer "i" such that M^i = N (There are other hypothesis involved).
> In my particular case, I would like to do the same for 3 x 3 matrices M , N
> over F_{11^2} (finite field with 121 elements).
Note that finding this integer i here is something different from what
is usually referred to as the "matrix logarithm" (the inverse of the
matrix exponential) which gives a matrix rather than an integer as the
result.
Is it prohibitive to just compute powers of M until you find that M^i = N?
Any i would need to satisfy det(M)^i = det(N) which should be faster
to solve for large i unless det(M) and det(N) are both zero or one.
Otherwise I think you can generalise the approach to other
coefficients in the characteristic polynomial.
Oscar
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Re: [sage-support] Matrix logarithm
On Mon, Apr 18, 2022 at 9:31 AM GUSTAVO TERRA BASTOS
wrote:
>
> Hi guys.
>
> Given two n x n matrices M, N, we know it is a big problem to find the
> positive integer "i" such that M^i = N (There are other hypothesis involved).
> In my particular case, I would like to do the same for 3 x 3 matrices M , N
> over F_{11^2} (finite field with 121 elements).
>
FYI, some options are mentioned in
https://math.stackexchange.com/questions/3116315/is-there-a-matrix-logarithm-in-sage
> Is it possible to do in a regular PC ?
>
> Best regards!
> Gustavo
>
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[sage-support] Matrix logarithm
Hi guys.
Given two n x n matrices M, N, we know it is a big problem to find the
positive integer "i" such that M^i = N (There are other hypothesis
involved). In my particular case, I would like to do the same for 3 x 3
matrices M , N over F_{11^2} (finite field with 121 elements).
Is it possible to do in a regular PC ?
Best regards!
Gustavo
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[sage-support] \ZZ not defined
This is on SageMath 9.5, Jupyter notebook. Am I missing something? Guillermo -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/CANnG18_jr_-D%2BBk5FTo%3DSZMimdMOHDN%2BOdQi8RJEQuPOmAsBiA%40mail.gmail.com.
