Berry paradox
Self-referential paradox / From Wikipedia, the free encyclopedia
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The Berry paradox is a self-referential paradox arising from an expression like "The smallest positive integer not definable in under sixty letters" (a phrase with fifty-seven letters).
Bertrand Russell, the first to discuss the paradox in print, attributed it to G. G. Berry (1867–1928),[1] a junior librarian at Oxford's Bodleian Library. Russell called Berry "the only person in Oxford who understood mathematical logic".[2] The paradox was called "Richard's paradox" by Jean-Yves Girard.[3]