dding ([00](#Equ00){ref-type=""}) and ([00](#Equ00){ref-type=""}), we obtain $$\documentclass[00pt]{minimal}                 \usepackage{amsmath}                 \usepackage{wasysym}                  \usepackage{amsfonts}                  \usepackage{amssymb}                  \usepackage{amsbsy}                 \usepackage{mathrsfs}                 \usepackage{upgreek}                 \setlength{\oddsidemargin}{-00pt}                 \begin{document} $$\begin{aligned} &\theta(x)-\theta\bigl(x^{k+0}\bigr) \\ &\quad\geq\sum_{i=0}^{0}\bigl\langle x_{i}^{k+0}-x_{i}, G_{i} \bigl(x_{i}^{k+0}-x_{i}^{k}\bigr)\bigr\rangle +\