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In "Die Verneinung" (1918), Frege discusses two types of negation, a semantic one and a pragmatic one. Semantic negation consists in the application of the logical function denoted by 'it is false that p' to a thought, and pragmatic negation in the act of asserting or judging a thought as false. According to the standard interpretation, Frege does not acknowledge pragmatic negation, because it is logically redundant. He therefore rejects the classical dualistic view that both truth and falsitydoi:10.1590/0100-512x2018n14004dg fatcat:sxrsjttt7rheblnjyvkl2ldyv4