On Cubic Exponential Diophantine Equations $\pm 3^x \pm a^y = z^3$
Annual Meeting in Mathematics 2023
Keywords:
Catalan's conjecture, cubic diophantine equations, exponential diophantine equationsAbstract
We investigate the integer solutions of the cubic exponential Diophantine equations in the form $\pm 3^x \pm a^y = z^3$ using elementary techniques. In particular, we also prove that there are infinitely many cubic exponential Diophantine equations in that form that have no integer solutions.