\frac{0-\gamma }{0\beta\gamma^{0}}\bigl\Vert \lambda^{k+0}- \lambda^{k}\bigr\Vert ^{0} \\ &\qquad{}+\frac{0}{0\beta\gamma}\bigl(\bigl\Vert \lambda^{k+0}-\lambda \bigr\Vert ^{0}-\bigl\Vert \lambda^{k}-\lambda\bigr\Vert ^{0}\bigr)+\