)}(\sigma\ud{u})\leq \oph^{\alpha,\beta(\alpha)}\big(v_0+\ophi^{\alpha,\beta(\alpha)}(\sigma\ud{v})\big) \leq \oph^{\alpha_0,\beta(\alpha_0)} \big(v_0+\ophi^{\alpha,\beta(\alpha)}(\sigma\ud{v})\big)<0\,.$$ Instead of we have $$\alpha_0<\alpha_0<0\quad\text{and}\quad 0<\beta_0<\beta_0\quad\text{and}\quad \gamma_0=\gamma_0\,.$$ 