There was an issues trying to fetch MathJax.js from the internet.

You may want to consider running the following in order to be able to use the Notebook.

            from IPython.external import mathjax; mathjax.install_mathjax()
        
Note that this will require a working internet connection when run, and it will try to install MathJax into the directory where you installed IPython. If you installed IPython to a location that requires administrative privileges to write, you will need to make this call as an administrator. On OSX/Linux/Unix, this can be done at the command-line via:
            sudo python -c "from IPython.external import mathjax; mathjax.install_mathjax()"
        

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