JargonFile/entries/exercise, left as an.txt
2014-04-26 16:54:15 +01:00

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exercise, left as an
adj. [from technical books] Used to complete a proof when one doesn't mind a
handwave , or to avoid one entirely. The complete phrase is: The proof [or
the rest ] is left as an exercise for the reader. This comment has
occasionally been attached to unsolved research problems by authors
possessed of either an evil sense of humor or a vast faith in the
capabilities of their audiences.