Questions tagged [sage]

SageMath, the Sage Mathematical Software System: free software for Computational Mathematics, based on Python. See longer description for links to other similar-sounding tags.

SageMath

SageMath, formerly SAGE, then Sage, is computational mathematics free software. It includes

python as the user language, also used in a lot of the source code
maxima, sympy, ginac (via Pynac) for symbolic algebra
numpy, scipy can be used for numerical computations
jupyter-notebook for its notebook system, with its own jupyter-kernel
SageTex to embed results into latex documents
many more components, in various languages, but interfaced in Python for usage in Sage

SageMath uses the Python language, with a tiny bit of syntactic sugar to ease definition of mathematical objects such as symbolic functions, number fields, polynomial rings. Some parts are written in cython or C/C++ for speed, but a typical user would only use Python syntax. Python wrappers help call other software included in SageMath pythonically.

It is possible to use SageMath using texmacs.

External links

SageMath project home page, wiki, issue tracker, questions-and-answers site
SageCell for one-off computations online, somewhat similar to Wolfram Alpha
CoCalc (ex SageMathCloud), to use SageMath and other software collaboratively online

Similar-sounding but unrelated tags

Many other things are called Sage. Please use the appropriate tags.

Use sage-one, sage-line-50, sage50, sage-300, sagepay, sage-crm, sage-erp for various accounting and business management software by The Sage Group PLC.
Use roots-sage for the WordPress starter theme by roots.io.
Use amazon-sagemaker for Amazon SageMaker, a machine learning service by Amazon.
Use sageframe for SageFrame, a "content management system" (CMS) on top of ASP.NET

Only use the sage tag for questions about SageMath, the Sage mathematics software system.

The TeX.SE website has a [sagetex] tag for SageTeX questions.

MathOverflow also has a [sage] tag for Sage questions.

Note also that Ask Sage, SageMath's questions-and-answers site, and sage-support, the user support mailing list, are very active and that questions asked there typically get answered faster than on the StackExchange network.

934 questions

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In Sympy is there a way to get a representation of Groebner basis in terms of defining polynomials?

In Sympy one can obtain the representation of a polynomial's reduction by a Grobner basis: from sympy import groebner, expand from sympy.abc import x, y f = 2*x**4 - x**2 + y**3 + y**2 G = groebner([x**3 - x, y**3 - y]) Q, r = G.reduce(f) assert f…

sympy symbolic-math polynomials sage groebner-basis

asked Jun 10 '21 at 19:59

KludgeShySir

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How to speedup Pytest startup (which is too slow) on loading huge library

Suppose we have installed huge library like SageMath. Let consider trivial test file: from sage.all_cmdline import * # import sage library class TestClass: def test_method(self): assert True It runs for about 1.5 sec…

python pytest nose sage

asked Apr 23 '20 at 09:45

petRUShka

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2 answers

How do you get the python colour scheme while using sage on VS code?

Currently, I name my files as .py while working on them, and then change them to .sage when I need to execute. Is there a way to get the python colour scheme for sage files on VS code? There is an extension called SAGE enterprise management that…

visual-studio-code ide editor color-scheme sage

asked May 26 '19 at 23:23

Mahathi Vempati

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memoryerror using nauty_geng in Sage

I am trying to get Sage to generate all graphs with 11 vertices, 30 edges, and clique number 4. I typed in the following: g11=[g for g in graphs.nauty_geng('11 30') if g.clique_number()==4] After a while I see the following message: MemoryError …

memory-management sage

asked Mar 30 '19 at 20:33

Sarah

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Jupyter Sagemath horizontal scroll output

I have a large matrix and when I print the matrix in Sage, the Jupyter notebook is wrapping the rows of the matrix, which makes visualizing the matrix very difficult. Instead, I want to enable horizontal scrolling. I've seen various solutions about…

jupyter-notebook jupyter sage

asked Feb 23 '19 at 00:40

Pistol Pete

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Conflicting Sage vs Wolfram evaluation of a limit?

Why are the following computed limits different (1 by Sage, 0 by Wolfram), and which (if either) is correct? EDIT: Revised per @Bill's suggestion to increase the numerical precision in Wolfram. (I don't know how to do the same in Sage.) The…

wolfram-mathematica sage wolframalpha

asked Aug 29 '18 at 03:06

r.e.s.

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1 answer

How to install SageMath kernel in Anaconda?

I'm trying to use Sage in Anaconda 3 but it looks that the libraries are not imported. I firstly created a new environment 'ipykernel_py2' and then installed Python 2 as explained in here. With this I can have both Python 3 and Python 3 up and…

python anaconda jupyter sage jupyter-kernel

asked Jul 12 '18 at 08:12

J. Serra

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1 answer

sagemath: convert R Element to float

How can I extract a numerical part of an R Element? I'm using the R interface in sagemath. And I would like to get float or int values. I have an R Element, that is an object of class sage.interfaces.r.RElement, that contains a value that I would…

python r sage

asked Mar 29 '18 at 06:36

kjl

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1 answer

How to save table output in an exportable manner in Sage

I am a sage novice trying to export a table output to some image format (so that it might be shared). I tried using the .save() function as so: my_table1 = table(my inputs) result = my_table1.transpose() result.save('here') My table outputs properly…

export output sage export-to-pdf

asked Jul 18 '17 at 21:36

BlobofJello

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0 answers

How to provide a Jacobian to SciPy curve_fit

I want to fit a sigmoidal curve to some data. Since SageMath's included find_fit function failed, I'm trying to use scipy.optimize.curve_fit directly. It's not doing a very good job and the outcome is extremely sensitive to the initial guess, often…

python numpy scipy numerical-methods sage

asked Jun 19 '17 at 21:42

jaia

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2 answers

Generate X random integers between Y and Z?

Is there a function in Python (I'm working with SageMath) to get 10 random integers between 0 and 30, for instance, without repeating them?

python random sage

asked Oct 13 '16 at 18:04

vandermies

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2 answers

Display polynomials in reverse order in SageMath

So I would like to print polynomials in one variable (s) with one parameter (a), say a·s^3 − s^2 - a^2·s − a + 1. Sage always displays it with decreasing degree, and I would like to get something like 1 - a - a^2·s - s^2 + a·s^3 to export it to…

latex polynomial-math sage display

asked Apr 13 '16 at 12:29

iipr

1,190
12
17

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1 answer

Syntax highlighting for .sage in sublime

I started to write some code for sagemath having extension .sage. I write those on sublime text editor. However there is no syntax highlighting for .sage documents. Sage is mostly based on Python. So is there any way that I can tell sublime to use…

sublimetext2 sublimetext3 syntax-highlighting sublimetext sage

asked Apr 05 '16 at 20:49

Kumarm

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1 answer

Multivariate polynomial division in sage

I try to do a simple division of polynomials in two variables using sage. Unfortunately, I get an unexpected result, as is illustrated in the code below. I tried several different ways to instantiate the ring and its variables, but the result stays…

python sage polynomials

asked Feb 05 '16 at 21:00

Jesper Freesbug

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1 answer

How to get a prime of a given length in Sage?

How can I get a random prime of a given bit length in Sage? For example, to get a 512-bit prime, I tried p = random_prime(2^512) but according to the documentation: The command random_prime(a, True) will return a random prime between 2 and a so…

primes sage

asked Dec 07 '15 at 18:27

Chin

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