Superradiant stability of the Kerr black hole

We know that Kerr black holes are stable for specific conditions.In this article, we use algebraic methods to prove the stability of the Kerr black hole against certain scalar perturbations. This provides new results for the previously obtained superradiant stability conditions of Kerr black hole. Hod proved that Kerr black holes are stable to massive perturbations in the regime $\mu \ge \sqrt 2 m{\Omega _H}$. In this article, we consider some other situations of the stability of the black hole in the complementary parameter region$\sqrt 2 \omega < \mu < \sqrt 2 m{\Omega _H}.$