【摘要】 本文利用新的比较结果和半序理论研究Ｂａｎａｃｈ空间中一阶非线性微分方程终值问题的最小解和最大解的存在性，改进和推广了某些已知结果．更多还原

【Abstract】 In this paper, by the use of new comparison results and the order methods innonlinear analysis, we study the existence of maximal and minimal solutions of terminal valueproblems for differential equations in Banach spaces. Some known results are improved andgeneralized.更多还原