Abstract
This article proposes a hypothesis.
We connect the Klein-Gordon equation through the formula of Fermat's last theorem. The above procedure has an integer solution when n is less than or equal to 2. However, through domain expansion, when n is greater than 2, we connect the Klein-Gordon equation to Fermat. The last theorem, the Klein-Gordon equation has no integer solution; then it expands, forming the algebraic form of ds space-time.