Fermat's Last Theorem (3 Lines Way)

17 August 2026, Version 2
This content is an early or alternative research output and has not been peer-reviewed by Cambridge University Press at the time of posting.

Abstract

Abstract 〖 is a〗^n+b^n=〖 c〗^n? Where a,b,c,n∈N_+,n>2 (*) Binomial Theorem The binomial theorem〖 (x+y)〗^n guarantees that every integer n∈ N_+ yields a non-zero integer, thereby preserving the intermediate terms; these terms remain part of the final polynomial less than〖 (x+y)〗^n. This paper presents a direct algebraic proof of Fermat’s Last Theorem. By examining the linear relationship between the bases a, b, and c, we partition the problem into two distinct cases. The trivial case, where a + b ≤ c, is resolved directly using strict power inequalities to get〖 a〗^n 〖+b〗^n≠c^n . For the non-trivial case, where a + b > c, we introduce a shifting framework using positive integer parameters u and v to construct an identity based on the Binomial Theorem. We prove that the resulting cross-term remainder function h is strictly positive (h ∈N_+). This logical way establishes a^n 〖+b〗^n≠c^n

Keywords

Fermat’s Last Theorem Binomial Expansion Number Theory Diophantine Equations Algebraic Grouping Polynomial Remainder

Comments

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Comment number 1, Peter M: Aug 17, 2026, 15:31

Please explain what h is for the example a=8, b=9, c=10, and n=3 for case iii). Is h positive as you claim? Also, please explain where you used n>3, because you have not used this fact anywhere. Therefore I can let a=3, b=4, c=5, and n=2.