In 1903 Russell’s paradox came over the mathematical world with a double stroke. Bertrand Russell himself published it under the heading “The Contradiction” in chapter 10 of his Principles of Mathematics (Russell 1903 ). Almost at the same time Gottlob Frege (1848–1925) referred to Russell’s paradox in the postscript of the second and final volume of his Grundgesetze der Arithmetik (Frege 1903 ...

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