Installing and running JupyterLab for SageMath in Windows

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Installing Sage using the Sage-Windows installer usually places several icons on the desktop:

• SageMath x.y --- to launch the Sage REPL (i.e. "read-eval-print loop" or "command-line interface")
• SageMath x.y Notebook --- to launch Jupyter Notebook and run Sage there
• SageMath x.y Shell --- to run the "Sage shell" inside Cygwin

In the Sage shell, one can type pip install jupyterlab or sage -i jupyterlab_widgets which will install JupyterLab and its widgets (useful in order to use sage interacts in Jupyter sheets running in JupyterLab).

To run JupyterLab after installing it, open the Sage shell and run

 jupyter lab