Introduction The less than relation is an order relation of real numbers. In this post, however, to prove one of its properties, we limit it to the set of whole numbers. In the set of whole numbers, is less than , or in symbol, if and only if there exists a whole number such that . For […]

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# College and Beyond

## Proof that Square Root of Three is Irrational

Introduction In The Intuitive Proof of the Infinitude of Primes, I showed you a proof strategy called proof by contradiction. In this post, we use this strategy to prove that is irrational. In proof by contradiction, if the statement P is true, you have to assume the contrary, and then find a contradiction somewhere. Note […]

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