Episode 173: The Four-Color Map Problem (Entry 495.NU2653)

July 23rd, 2019  •  50 mins 36 secs  •  Download (71.1 MB)  •  Link with Timestamp

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In which over a century of mathematicians are unable to solve a geometry problem straight out of a coloring book, computers provide their first ever math "proof," and Ken challenges John to map a donut. Certificate #28876.