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Futurama theorem
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
From "The Prisoner of Benda" (2010), season 6, episode 10 of Futurama. The episode and the theorem were written by the mathematician Ken Keeler.
Proper noun
Futurama theorem
en group theory A theorem which proves that, given a mind swap machine that can't be used on the same pair of people more than once, it is possible to reverse any number of mind swaps by introducing two more people that did not have their minds swapped with anyone before.
en terms derived from Futurama