The paper deals with the existence, uniqueness, and iterative approximations of solutions for the functional equations arising in dynamic programming of multistage decision making processes in Banach spaces BC(S) and B(S) and complete metric space BB(S), respectively. Our main results extend, improve, and generalize the results due to several authors. Some examples are also given to demonstrate the advantage of our results over existing one in the literature.
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机译：本文分别涉及在Banach Space BC（S）和B（S）和完整度量空间BB（S）中的多级决策过程中产生的功能方程的存在，唯一性和迭代近似。我们主要结果扩展，改进，概括了由于若干作者而概括的结果。还给出了一些例子来证明我们对文献中存在的结果的优势。
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