Proof of square root of two irrationality

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TheAbdicatedKing

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What is the earliest known accepted proof of the irrationality of the square root of two or the n root of any prime preferably one that is attributed to someone?
 
TheAbdicatedKing said:
What is the earliest known accepted proof of the irrationality of the square root of two or the n root of any prime preferably one that is attributed to someone?
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What searches have you conducted and what did you learn from those?
 
TheAbdicatedKing said:
What is the earliest known accepted proof of the irrationality of the square root of two or the n root of any prime preferably one that is attributed to someone?
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hippasus (? on spelling)
he was drowned in the Mediterranean Sea for proclaiming the diagonal of a square is irrational.
[It is very doubtful he proved it, at least not to his assassins.]
 
Thanks for the replies

I am old and not really good at typing much less googling (the best I knew to do was to type in square root of two proof and/or nth root of a prime proof into the google bar and hit enter). I understand the proofs but I am unable to find point of origin for such proofs. Thanks for any additional help.
 
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