A Problem with the Parallel Postulate - Numberphile

Featuring Juanita Pinzón Caicedo from University of Notre Dame.
More links & stuff in full description below ↓↓↓

Juanita: https://math.nd.edu/people/faculty/juanita-pinzon-caicedo/

A previous video on this issue and the postulates/axioms: https://youtu.be/PnW5IRvgvLY

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Видео A Problem with the Parallel Postulate - Numberphile канала Numberphile