《英汉电力技术词典(第二版)》共收词汇12万多条,内容覆盖电工电子、电力系统、火电、水电、核电、新能源、输配电、计算机与仪表控制、金属材料、化学、环保等与电力工业相关的专业学科。 本词典主要供从事电力科研、设计、施工、运行和电力设备制造、修理的工程技术人员、管理人员使用,也可供有关院校师生使用。
《量子场论》内容简介:I have tried to make the subject as accessible to beginners as possible. There are three main aspects to my approach. Logical development of the basic concepts. This is, of course, very different from the historical development of quantum field theory, which, like the historical development of most worthwhile subjects, was filled with inspired guesses and brilliant extrapolations of sometimes fuzzy ideas, as well as its fair share of mistakes, misconceptions, and dead ends. None of that is in thiook. From thiook, you will (I hope) get the impression that the whole subject is effortlessly clear and obvious, with one step following the next like sunshine after refreshing rain.
《高等有机化学:反应与合成(第5版)》是《高等有机化学:反应与合成(第5版)》的新版,自从1977年面世以来,《高等有机化学:反应与合成(第5版)》作为学科教材的地位一直没有动摇过,广泛地覆盖了有机化合物的结构、反应活性及合成。她的第五版相对2001年出版的第四版进行了大幅度的修订,更新了学科发展的相关资料,内容组织更加清晰明朗,特别是计算化学部分。通过控制反应而得到特定的合成是有机合成的目标。PartB在不同反应类型的基础上详尽地描述了最常见的和最有用的合成反应。每章后附有习题精选及解答习题的推荐参考文献。
本书主要内容包括土壤学、林木种子、林木育苗与树木学、森林生态学、遗传育种、森林经理、森林培育和3S技术等方面,分别选定若干主题。每课主要由课文,相应参考译文,阅读材料组成。为了加深学生对课文的理解,每课都配有相应的阅读理解资料,而阅读材料是与课文相关的文章,是课文的拓展部分,以加深学生对一些专业理论、观点的全面理解。 本书旨在帮助读者提高林学专业英语文献的阅读理解能力,同时加强专业英语的翻译、写作、交流能力。另一方面,通过对本的学习和阅读,也可以巩固和拓展读者的专业知识。 本书可作为林学及其相关专业学生的英语,也可供上述相关专业的教师、科研人员参考。
《示性类》内容简介:The text which follows is based mostly on lectures at PrincetonUniversity in 1957. The senior author wishes to apologize for the delayin publication.The theory of characteristic classes began in the year 1935 with almostsimultaneous work by HASSLER WHITNEY in the United States andEDUARD STIEFEL in Switzerland. StiefeI's thesis, written under thedirection of Heinz Hopf, introduced and studied certain "characteristic"homology classes determined by the tangent bundle of a smooth manifold.Whitney, then at Harvard University, treated the case of an arbitrary spherebundle. Somewhat later he invented the language of cohomology theory,hence the concept of a characteristic cohomology class, and proved thebasic product theorem.
《线性代数(第4版)》讲述了:This textbook gives a detailed and prehensive presentation of linear algebra based on an axiomatic treatment of linear spaces. For this fourth edition some new material haeen added to the text, for instance, the intrinsic treatment of the classical adjoint of a linear transformation in Chapter IV, as well as the discussion of quaternions and the classification of associative division algebras in Chapter VII. Chapters XII and XIII have been substantially rewritten for the sake of clarity, but the contents remain basically the same aefore. Finally, a number of problems covering new topics- e.g. plex structures, Caylay numbers and symplectic spaces- have been added. ...
《模形式与费马大定理(英文)》中介绍和扩充讲述了wiles的许多观点和技巧,并阐述了他的结果是如何与ribets定理、frey,serre思想的结合,来证明费马最后定理。从一个完整的证明开始,紧接着用一些章节介绍了双曲线、模函数、曲线、伽罗瓦上同调和有限群的基本概念。表示理论是整个证明的核心,在一章有关自同构表示论和langlands-tunnell定理给出,紧随其后深度介绍serres猜想、伽罗瓦变形、一般变形环、hacke代数。此书以回顾和展望作为结束,既反映了这个问题的历史,又将wiles定理放在了一个更加一般的diophantine背景,给出了预期应用。数学专业的学生和老师将会发现这本书是一部很难得参考书。
《现代概率论基础(第二版)》介绍要使我国的数学事业更好地发展起来,需要数学家淡泊名利并付出更艰苦地努力。另一方面,我们也要从客观上为数学家创造更有发展数学事业的外部环境,这主要是加强对数学事业的支持与投资力度,使数学家有较好的工作与生活条件,其中了包括改善与加强数学的出版工作。修订版增加了四章,并对原版内容作了大量修改。
《国外数学著作·原版系列:解析数论问题集(第2版)(英文)》是国外数学著作原版系列之一,解析数论,为数论中的分支,它使用由数学分析中发展出的方法,作为工具,来解决数论中的问题。它首次出现在数学家狄利克雷使用数学分析方法证明狄利克雷定理。
《代数拓扑中微分形式》内容为:The guiding principle in thiook is to use differential forms as an aid inexploring some of the less digestible aspects of algebraic topology. Accord-ingly, we move primarily in the realm of smooth manifolds and use thede Rham theory as a prototype of all of cohomology. For applications tohomotopy theory we also discusy way of analogy cohomoiogy witharbitrary coefficients. Although we have in mind an audience with prior exposure to algebraicor differential topology, for the most part a good knowledge of linearalgebra, advanced calculus, and point-set topology should suffice. Someacquaintance with manifolds, simplicial plexes, singular homology andcohomology, and homotopy groups is helpful, but not really necessary.Within the text itself we have stated with care the more advanced resultsthat are needed, so that a mathematically mature reader who accepts thesebackground materials on faith should be able to read the entire book withthe minimal prerequisites.
《纤维丛(第3版)》讲述了:The notion of a fibre bundle first arose out of questions posed in the 1930s on the topology and geometry of manifolds. By the year 1950, the definition of fibre bundle had been clearly formulated, the homotopy classification of fibre bundles achieved, and the theory of characteristic classes of fibre bundles developed by several mathematicians: Chern, Pontrjagin, Stiefel, and Whitney. Steenrod'ook, which appeared in 1950, gavea coherent treatment of the subject up to that time. About 1955, Miinor gave a construction ora universal fibre bundle for any topological group. This construction is also included in Part I along with an elementary proof that the bundle is universal.
《英汉园艺学词汇》共有38178字、词及植物名称,包括与园艺学、农学、林学及植物学中有关的生理、生化、生态、遗传、育种、繁殖等的名词,也包括植物的名称、学名、科属名等,是一本综合性的英、汉名词对译的工具书,可作为园艺学、农学、林学甚至医学等自然科学的教学、研究及社会有关各界的参考书。编写本书的目的是为己也为人。在国家受到外国强侵略的那个时期,农学的中文书籍极度贫乏,参阅外文书常以专有名词及植物名称的无处查阅,阻碍求知进程及科学发展,从而兴趣把阅读过的园艺及一般农学的外文专有名词抄录下来,日久天长积累繁多,再次翻查时每每拖延旷时,乃再改抄写卡片,排列成序,并在一期刊中之页,以填补充页方式,逐字试刊、校对,汇编成册。