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Titlebook: Introduction to Cyclotomic Fields; Lawrence C. Washington Textbook 19821st edition Springer-Verlag New York Inc. 1982 Fields.Kreisk?rper.a

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書(shū)目名稱Introduction to Cyclotomic Fields
編輯Lawrence C. Washington
視頻videohttp://file.papertrans.cn/474/473589/473589.mp4
叢書(shū)名稱Graduate Texts in Mathematics
圖書(shū)封面Titlebook: Introduction to Cyclotomic Fields;  Lawrence C. Washington Textbook 19821st edition Springer-Verlag New York Inc. 1982 Fields.Kreisk?rper.a
描述This book grew. out of lectures given at the University of Maryland in 1979/1980. The purpose was to give a treatment of p-adic L-functions and cyclotomic fields, including Iwasawa‘s theory of Zp-extensions, which was accessible to mathematicians of varying backgrounds. The reader is assumed to have had at least one semester of algebraic number theory (though one of my students took such a course concurrently). In particular, the following terms should be familiar: Dedekind domain, class number, discriminant, units, ramification, local field. Occasionally one needs the fact that ramification can be computed locally. However, one who has a good background in algebra should be able to survive by talking to the local algebraic number theorist. I have not assumed class field theory; the basic facts are summarized in an appendix. For most of the book, one only needs the fact that the Galois group of the maximal unramified abelian extension is isomorphic to the ideal class group, and variants of this statement. The chapters are intended to be read consecutively, but it should be possible to vary the order considerably. The first four chapters are basic. After that, the reader willing to
出版日期Textbook 19821st edition
關(guān)鍵詞Fields; Kreisk?rper; algebra; algebraic number theory; field; number theory
版次1
doihttps://doi.org/10.1007/978-1-4684-0133-2
isbn_ebook978-1-4684-0133-2Series ISSN 0072-5285 Series E-ISSN 2197-5612
issn_series 0072-5285
copyrightSpringer-Verlag New York Inc. 1982
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Cyclotomic Units,e explicitly a group of units, namely the cyclotomic units, which is of finite index in the full unit group. Moreover, this index is closely related to the class number, a fact which allows us to prove Leopoldt’s .-adic class number formula. Finally, we study more closely the units of the .th cyclot
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Galois Groups Acting on Ideal Class Groups,o great advantage to reinterpret old results and to obtain new information on the structure of class groups. In this chapter we first give some results which are useful when working with class groups and class numbers. We then present the basic machinery, essentially Leopoldt’s Spiegelungsatz, which
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Cyclotomic Fields of Class Number One,y finitely many such fields, but the result was noneffective: there was no computable bound on .. So we need other techniques. Since . divides . if . divides ., it is reasonable to start with . prime. In 1964 Siegel showed that . = 1 implies . ≤ ., where . is a computable constant, but the constant
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Measures and Distributions,As we shall see, many ideas from Chapters 4, 5, 7, and 8 fit into this general framework. The related concept of a measure yields a .-adic integration theory which allows us to interpret the .-adic .-function as a Mellin transform, as in the classical case.
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The Kronecker-Weber Theorem, in 1853, but his proof was incomplete. In particular, there were difficulties with extensions of degree a power of 2. Even in the proof we give below this case requires special consideration. The first proof was given by Weber in 1886 (there was still a gap; see Neumann [1]). Both Kronecker and Web
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