Proof of Fermat’s Last Theorem for n=3 Using Tschirnhaus Transformation

B.B. Upeksha, R.A.D. Piyadasa


This paper gives a proof on Fermat’s Last Theorem
(FLT) for n=3 by firstly reducing the Fermat’s equation to a
cubic equation of one variable and then using Tschirnhaus
transformation to reduce it to a depressed cubic. By showing that
this last equation has non-rational roots it was concluded that the
Fermat’s equation cannot have integer solutions.


Fermat’s Last Theorem; Tschirnhaus transformation; Integer roots

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