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Everyone at CMU knows who Jerry is.

For what I read, those were the course notes.

Those weren't the course notes. That's a wiki for (and from) students and TA's, mostly. One semester's course notes are here:https://colormygraph.ugrad.cs.cmu.edu/anupam/

The lecture that discusses finite probability distributions is at: https://colormygraph.ugrad.cs.cmu.edu/site_media/static//cou...