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= SAGE =
Introduction
"Sage is a free open-source mathematics software system licensed under the GPL. It combines the power of many existing open-source packages into a common Python-based interface."
"Mission: Creating a viable free open source alternative to Magma, Maple, Mathematica and Matlab."
Website: http://www.sagemath.org/
Installation Instructions
Look for the package named sagemath in the Synaptic Package Manager and install it. Ubuntu (as of 3-5-2009) will install Sagemath Version 3.0.5 while as of the same date the latest version offered by the Sagemath team is 3.4.1.
Alternatively open a terminal and type:
sudo apt-get install sagemath
Getting Started With Sage
Open a terminal and type sage and press enter. The sage command line interface should start up. Wait for the sage prompt to come up. It would looks thus:
sage:
This may take a while depending on your hardware.
The first time you use sage you will be asked to set a password to secure your work.
Choice of Sage Interface: Command Line Or GUI
You have a choice of using sage either from the command line or from a GUI. In order to use the GUI interface to sage use the sage prompt to type:
notebook()
This will open the GUI interface to sage which is the well known Firefox web browser.
To start work with the GUI interface of sage click on the link New Worksheet.
The rest involves typing your sage commands into the input box and clicking the evaluate button that lies below it.
Help and Documentation
Help for sage is available from: http://www.sagemath.org/help.html
There you will find separate links for:
Third Section
Some sections may just contain a list of links. It is sometimes useful to include a short explanation of what the links are for. For example: 'Ubuntu includes the following Internet applications by default.'
<Link> - Lists of links should have bullets. Link text should not be in bold. Each link should be followed by a short explanation of the link.
<Link> - Explanations of links should be written as full sentences.
See Also
A see also section can be used to point users towards other trusted Ubuntu resources. For example, if a page exists in the official documentation on http://help.ubuntu.com, you can link to such a page. This section is optional.
<Link> - Explanation of link.
<Link> - Explanation of link.
<Link> - Explanation of link.
External Links
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<Link> - Explanation of link.
<Link> - Explanation of link.
<Link> - Explanation of link.