Github mangles the math when it renders Jupyter notebooks. To see the math rendered correctly, go to nbviewer. There you'll see a search field. Paste the URL of the github notebook into the search field. nbviewer will render the notebook, math and all.

For your convenience, I'll provide links to the nbviewer-version of each lecture in the course schedule.

To download files from this site, open the file in GitHub, click on the Raw button, and right-click Save Page As.... Make sure the file is saved with the correct filename extension. For example, the extension in the filename Lecture1.ipynb is .ipynb. (You may need to set the Format dropdown in your download dialog box to Page Source and edit the file name in the dialog box to have the correct filename extension.)

These notebooks were created using RISE, a Jupyter extension that allows the notebook to be used as a live presentation via Reveal.js. Succinct documentation can be found here.