Diophantine equations Equations of the form xn + yn = zn An Approach to a Simple Proof of Fermat’s Last Theorem (2018), latest update linkNote: Not finished yet.An Elementary and Simple Proof of Fermat’s Last Theorem (2018)Note: There is a mistake by using the method of equating the coefficients, so the proof failed.On an alternative proof of Fermat’s Last Theorem (2014)Über die diophantische Gleichung x3 + y3 = z3 (2014)Über die Lösbarkeit der diophantischen Gleichung xn + yn = zn (2014)