We have inserted, in this edition, an extra chapter (Chapter X) entitled "Some Applications and Recent Developments." The first section of this chapter describes how homological algebra arose by abstraction from algebraic topology and how it has contributed to the knowledge of topology. The other four sections describe applications of the methods and results of homological algebra to other parts of algebra. Most of the material presented in these four sections was not available when this text was first published. Naturally, the treatments in these five sections are somewhat cursory, the intention being to give the flavor of the homological methods rather than the details of the arguments and results.
《上海市初中数学星级训练（压轴题增强版中考）/数学星级题库丛书》采用题型分类难度分阶的形式，将所有试题由浅入深分别编入各节，并提供详尽的解析。所选试题几乎囊括上海市近5年各区一模、二模两题，是上海地区初中学生提高数学应试能力及辅助教师教学的读物。
学习数学必须演算大量的习题，但面对浩如烟海的辅导资料，遴选哪些习题给学生演练，才能既固根正本，有利于形成熟练的技能，又能培养学生的数学思维能力；对选定的题目从何处入手分析，怎样分析既符合学生知识水平现状，顺应学生已有知识结构，又有利于培养学生举一反三触类旁通的能力；对同类习题分析解答之后如何归纳提炼出隐藏在字里行间的思想方法，以便学生形成解决问题的策略知识……这些都是数学教育工作者、家长和学生亟需解决的问题。基于上述考虑，经过认真研究，我们组织学有特长教有特色研有成果的几位同仁精心编撰了 《高中数学解题辞典》。本书具有1.编排体系新颖2.题目选择精当3.分析与解答讲究启蒙4.问题评注有特色
