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Ideas for 'Intensional Logic', 'The Disorder of Things' and 'Wittgenstein's 'Philosophical Investigations''

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5. Theory of Logic / A. Overview of Logic / 8. Logic of Mathematics

11026	Classical logic is deliberately extensional, in order to model mathematics [Fitting]
	Full Idea: Mathematics is typically extensional throughout (we write 3+2=2+3 despite the two terms having different meanings). ..Classical first-order logic is extensional by design since it primarily evolved to model the reasoning of mathematics.
	From: Melvin Fitting (Intensional Logic [2007], §1)