Shirali, Shailesh
(2023)
Opening Bracket... On proof and reasoning in the teaching of mathematics.
At Right Angles.
ISSN 2582-1873
Abstract
Proof is central to the discipline of mathematics, and the exercise of looking for new proofs for known results, or proofs that embody an aesthetic element, is highly valued by mathematicians. G H Hardy writes in A Mathematician’s Apology (which has been reviewed in this issue) about a method of proof that is very dear to mathematicians – ‘proof by contradiction’ or ‘reductio ad absurdum’.
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