Over de onbetrouwbaarheid der logische principes

"Over de onbetrouwbaarheid der logische principes," published in 1908, is a work by Dutch mathematician L.E.J. Brouwer. In this text, Brouwer challenges the validity of the principle of the excluded middle, a fundamental law of classical logic. This principle states that any proposition is either true or false, with no other possibility. Brouwer argued that this dichotomy does not apply to infinite sets, proposing that mathematical proofs should not rely on this principle when dealing with such sets. This stance was a foundational element of his mathematical philosophy, known as intuitionism.1234