Pythagoras is mathematician and philosopher from Greece ( 582 – 496 B.C ).
Pythagoras explain that a right agled triangle, quadrat of hipotenusa is equals of the total length of salient angle adges quadrat. This theorem called Pythagoras Theorem because Pythagoras has been considered this theorem discoverer. Althought in fact this theorem has been known before, such as mathematician India ( in Sulbasutra Baudhayana and Katyayana ), Old Greece, and Babylon at before Pythagoras born, but Pythagoras is the first person who proof theorem with mathematical. So, he has been considered Pythagoras Theorem discoverer.
Pythagoras explain that a right agled triangle, quadrat of hipotenusa is equals of the total length of salient angle adges quadrat. This theorem called Pythagoras Theorem because Pythagoras has been considered this theorem discoverer. Althought in fact this theorem has been known before, such as mathematician India ( in Sulbasutra Baudhayana and Katyayana ), Old Greece, and Babylon at before Pythagoras born, but Pythagoras is the first person who proof theorem with mathematical. So, he has been considered Pythagoras Theorem discoverer.
Then Hippasus ( mathematician and philosopher from Old Greece ca.500 B.C ), he is Pythagoras’s follower. Previosly, Pythagoras and his followers deem that all number is rational number, or can explained in comparison round number. Then Hippasus explain that √2 is irrational number. He prov with reductio ad absurdum and he succes prov that √2 is irrational number. Hippasus is irrational number discoverer. But, because this discovery, he killed by Pythagoras. Pythagoras does not admitted his philosophy mistake, and he does not opposed Hippasus, althought that is contradicted with his philosophy. And then, Pythagoras kill Hippasus.
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