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1. Commutative Algebra - Wikipedia, The Free Encyclopedia
Commutative algebra is the branch of abstract algebra that studies commutative rings, their ideals, and modules over such rings. Both algebraic geometry and
http://en.wikipedia.org/wiki/Commutative_algebra

2. Commutative Algebra
Although the title of this course is commutative algebra, we are really going to do algebraic geometry. The plan of this yearlong course is to follow very
http://www.math.columbia.edu/~dejong/commutative_algebra/

Extractions: Home page of A.J. de Jong Although the title of this course is commutative algebra, we are really going to do algebraic geometry. The plan of this yearlong course is to follow very closely the lecture notes of Ravi Vakil which you can find announced on this blog and actually posted on this page . Ravi also explains his philosophy on the blog and I am going to subscribe to this philosophy as much as possible. In particular, you will have to do a lot of reading and exercises yourself to keep up with this course. Perhaps I will point out here myself that as this is a foundations course we will not actually get very far with the material. On the other hand, it will hopefully provide solid foundations which will allow you to speed up the learning process once you've gone through it. It is strongly encouraged to go to the lectures, which are on Tuesday and Thursday 11:00-12:15 in Mathematics 507. Problem sets will be announced in lecture on Tuesdays and on this web page. They are due in lecture on the next Tuesday. Please write out all arguments completely. The TA for the course is Zachary Maddock. His email address is -@math.columbia.edu and his office is Mathematics -. He will have office hours on Monday probably between -.

3. Category:Commutative Algebra - Wikipedia, The Free Encyclopedia
In mathematics, Commutative Algebra is the area of abstract algebra dealing
http://en.wikipedia.org/wiki/Category:Commutative_algebra

Extractions: From Wikipedia, the free encyclopedia Jump to: navigation search In mathematics Commutative Algebra is the area of abstract algebra dealing with commutative rings and commutative modules and algebras over commutative rings. It is essential to the study of algebraic geometry and algebraic number theory The main article for this category is Commutative algebra Wikimedia Commons has media related to: Commutative algebra This category has only the following subcategory. The following 102 pages are in this category, out of 102 total. This list may not reflect recent changes ( learn more F cont.

4. Commutative Algebra By The SwissPedia, The Free Encyclopedia By Just Click Searc
Commutative algebra. The biggest multilingual freecontent encyclopedia on the Internet. Over 7 million articles in over 200 languages, and still growing.
http://www.swisscorner.com/wiki.php?title=Commutative_algebra

5. Commutative Algebra | Ask.com Encyclopedia
This page deals with the area of study. For algebras which are commutative, see algebra (disambiguation).

6. Commutative Algebra
Commutative Algebra Home page of A.J. de Jong. The topics we will discuss are Spectrum of a ring, elementary properties, flat and integral ring extensions, going up and going
http://math.columbia.edu/~dejong/courses/commutative_algebra_old/index.html

Extractions: Home page of A.J. de Jong The topics we will discuss are: Spectrum of a ring, elementary properties, flat and integral ring extensions, going up and going down, constructable sets and Chevalley's Theorem, graded modules, Artin-Rees theorem, dimension theory of Noetherian local rings, dimension theory of finitely generated k-algebras and transcendence degree, Hilbert Nullstellensatz. We will attempt to motivate the theory by giving examples from algebraic geometry, but the theorems discussed in the lectures will be theorems of commutative algebra. I will be using the book by Matsumura, Commutative Algebra (Mathematics Lecture Notes Series ; 56), Benjamin-Cummings Pub Co; 2d ed edition (July 1980). It is the book I learned this material from. This book is out of print. On the other hand, you can find all the material covered in any reasonable commutative algebra books. It is a good idea to choose one and stick to it however. Come and find me in my office if you are not sure which books to look at; I have a bunch of them available for you to look at. Another possibility is to use the lecture notes by Professor Robert Friedman from his previous years teaching this course. They are available to registered students through courseworks. It is strongly encouraged to go to the lectures, which are on Tuesday and Thursday 2:40-3:55 in Mathematics 520.

7. Commutative Algebra - On Opentopia, Find Out More About Commutative Algebra
In abstract algebra, commutative algebra studies commutative rings, their ideals, and modules based on such rings; and of field s and their algebras.
http://encycl.opentopia.com/term/Commutative_algebra

Extractions: In abstract algebra commutative algebra studies commutative rings , their ideals , and modules based on such rings; and of field s and their algebras . Both algebraic geometry and algebraic number theory build on commutative algebra. Prominent examples of commutative rings include polynomial ring s, rings of algebraic integers , including the ordinary integer s Z , and p-adic integer s. Given the scheme concept, much of commutative algebra can be seen as either the local or the affine theory of algebraic geometry The study of noncommutative rings is known as noncommutative algebra , consisting of ring theory , representation theory, and Banach algebra The subject, first known as ideal theory , began with Richard Dedekind 's work on ideal s based on the earlier work of Ernst Kummer and Leopold Kronecker . Later, David Hilbert introduced the term "ring" to generalize the earlier term "number ring". Hilbert introduced a more abstract approach to replace the more concrete and computationally oriented methods grounded in such things as complex analysis and classical invariant theory . In turn, Hilbert strongly influenced

8. Commutative Algebra - Encyclopedia Article - Citizendium
This is a draft article, under development and not meant to be cited; you can help to improve it. These unapproved articles are subject to a disclaimer.
http://en.citizendium.org/wiki/Commutative_algebra

Extractions: This is a draft article , under development and not meant to be cited; you can help to improve it. These unapproved articles are subject to edit intro Commutative algebra developed as a theory in mathematics having the aim of translating classical geometric ideas into an algebraic framework, pioneered by David Hilbert and Emmy Noether at the beginning of the 20th century. The notion of commutative ring assumes commutativity of the multiplication operation and usually the existence of a multiplicative identity in addition. The category of commutative rings has commutative rings as its objects ring homomorphisms as its morphisms; i.e., functions such that is a morphism of abelian groups (with respect to the additive structure of the rings and for all , and The theory of affine schemes was initiated with the definition of the prime spectrum of a ring, the set of all

9. Commutative Algebra
A selection of articles related to Commutative Algebra commutative algebra Encyclopedia II Algebra ring theory - Formal definition
http://www.experiencefestival.com/commutative_algebra

10. Commutative Algebra - MGSA
Let A be a commutative ring, M a finitely generated Amodule, and elements of M which generate for every maximal ideal of A. Show that they generate M.
http://www.ocf.berkeley.edu/~mgsa/wiki/Commutative_Algebra

Extractions: Views From MGSA Jump to: navigation search Let A be a commutative ring, M a finitely generated A -module, and elements of M which generate for every maximal ideal of A . Show that they generate M Vojta What is Give an example of a commutative ring with unity which has prime ideals which are not maximal. Give two examples of UFD's which are not PID's. Suppose where F is a field. Let p a for , an extension of F . Show that p x x a q x for some Show that an element a is irreducible if and only if a is maximal, where and R is a PID. Let R be a finite commutative ring free of zero divisors. Show that R has a unit, show that each non-zero element has an inverse. Is the result still true if R is infinite? Is there a general class of rings in which maximal ideals and prime ideals are the same? Let P be a prime ideal in R such that R P is a finite ring. Show that P is maximal if R is a commutative ring with unit. Show that in a commutative ring with unit every maximal ideal must be prime. Describe the ring of endomorphisms of the integers.

11. Commutative Algebra - ENotes.com Reference
Get Expert Help. Do you have a question about the subject matter of this article? Hundreds of eNotes editors are standing by to help.
http://www.enotes.com/topic/Commutative_algebra

12. Commalg.org :: The Commutative Algebra Community
A site for the commutative algebra community, including news, conference and preprint announcements, and a huge list of algebraists.
http://www.commalg.org/

Extractions: a website for the commutative algebra community. In addition to news items of interest to commutative algebraists, we list all the conferences we hear about that focus at least partially on commutative algebra, and sometimes some photos of them. We also maintain as complete a list of commutative algebraists as possible, and a huge list of links to websites of interest. Amelia Taylor writes: Dear Macaulay 2 user, www.crcg.de ). Activities will start first thing Monday morning (possibly Sunday night). The purpose of the workshop is to bring Macaulay 2 developers together with those who would like to share or develop their skills at writing packages for Macaulay 2 and those interested in developing the corresponding mathematical algorithms. more news November 5th, 2010:

13. A Course In Commutative Algebra
http://www.math.uiuc.edu/~r-ash/ComAlg.html

14. Commutative Algebra -- From Wolfram MathWorld
Let A denote an Ralgebra, so that A is a vector space over R and A A- A (1) (x,y) - x y. (2) Now define Z={x in Ax y=0 for some y in A!=0}, (3) where 0 in Z.
http://mathworld.wolfram.com/CommutativeAlgebra.html

Extractions: Commutative Algebra Let denote an -algebra, so that is a vector space over and Now define where . An Associative -algebra is commutative if for all . Similarly, a ring is commutative if the multiplication operation is commutative, and a Lie algebra is commutative if the commutator is for every and in the Lie algebra The term "commutative algebra" also refers to the branch of abstract algebra that studies commutative rings . Commutative algebra is important in algebraic geometry SEE ALSO: Abelian Group Abstract Algebra Commutative Commutative Ring Portions of this entry contributed by John Renze REFERENCES: Atiyah, M. F. and MacDonald, I. G. Introduction to Commutative Algebra. Reading, MA: Addison-Wesley, pp. 9-10, 1969. Cox, D.; Little, J.; and O'Shea, D. Ideals, Varieties, and Algorithms: An Introduction to Algebraic Geometry and Commutative Algebra, 2nd ed. New York: Springer-Verlag, 1996. Eisenbud, D. (Ed.). Commutative Algebra, Algebraic Geometry, and Computational Methods.

15. Front: Math.AC Commutative Algebra
Articles cover commutative rings, modules, ideals, homological algebra, computational aspects, invariant theory, connections to algebraic geometry and
http://front.math.ucdavis.edu/math.AC

Extractions: journals ... iFAQ math.AC Commutative Algebra Calendar Search Atom feed Search Author Title/ID Abstract+ Category articles per page Show Search help Recent New articles (last 12) 29 Oct arXiv:1010.5952 On Certain Divisibility Property of Polynomials. Luis F. Caceres , Jose A Velez Marulanda math.AC 29 Oct arXiv:1010.5878 Another definition of Euler class group of a Noetherian ring. Manoj K Keshari , Satya Mandal math.AC 28 Oct arXiv:1010.5768 Gröbner bases of contraction ideals. Takafumi Shibuta math.AC 28 Oct arXiv:1010.5704 Type sequences of one-dimensional local analytically irreducible rings. Valentina Barucci , Ioana Cristina math.AC 28 Oct arXiv:1010.5615 Lexsegment ideals are sequentially Cohen-Macaulay. Muhammad Ishaq math.AC 27 Oct arXiv:1010.5480 Continuous closure of sheaves. János Kollár (Princeton Univ). math.AC math.AG 26 Oct arXiv:1010.5066 A Chevalley theorem for difference equations. Michael Wibmer math.AC math.AG 25 Oct arXiv:1010.4692 Values and bounds of the Stanley depth. Muhammad Ishaq math.AC

16. Commutative Algebra Authors/titles Recent Submissions
Title Abelian varieties over finitely generated fields and the conjecture of Geyer and Jarden on torsion
http://arxiv.org/list/math.AC/recent

17. Commutative Algebra
Commutative Algebra Commutative Algebra General 13Axxexcluding 13A50,13Bxx 1DavidF. Anderson, Andrea Frazier, Aaron Lauve, and Philip S. Livingston.
http://magma.maths.usyd.edu.au/magma/citations/AreaCommAlg.pdf

18. Algebraic Geometry, Commutative Algebra And Combinatorics -- Erice 2001, NATO Ad
Exterior Algebra Methods and Other New Directions. Erice, Sicily, Italy; 9 15 September 2001.
http://www.math.sunysb.edu/~sorin/Erice-2001/

Extractions: Event photos The workshop in Erice will address a wide range of new developments in classical Algebraic Geometry such as curves and their moduli, surfaces, higher dimensional varieties, vector bundles, and toric varieties. A special focus will be on exterior algebra methods which have recently grown in importance in Algebraic Geometry, Commutative Algebra, and Combinatorics, and their computational aspects (Bernstein-Gel'fand-Gel'fand correspondence, Beilinson monad, theory of Chow forms and resultants, algebraic shifting, free resolutions over the exterior algebra, linear syzygies, hyperplane arrangements, ...) Organizing Committee: David Eisenbud Lucian Badescu Sorin Popescu and Alfio Ragusa Speakers (tentative): The following people have responded positively to our invitation: Sponsors: NATO Scientific Affairs Division EAGER: European Algebraic Geometry Research Training Network and the University of Catania , Sicily. Registration: The cost of staying at the Ettore Majorana Centre will be approximately \$80 per night (lodging/meals/transfer from/to the airport/1/2 day trip included), and there will be a fee of \$100 for the social events. We will be able to offer financial assistance to some of the participants, particularly to younger mathematicians and speakers.

19. Book: A Singular Introduction To Commutative Algebra
July 2004 The Richard D. Jenks Prize for Excellence in Software Engineering for Computer Algebra was awarded to the Singular team.
http://www.singular.uni-kl.de/Singular-book.html

Extractions: Support The SINGULAR Team provides free support Release February 2010: Release of SINGULAR version 3-1-1. More Jenks Prize July 2004: The Richard D. Jenks Prize for Excellence in Software Engineering for Computer Algebra was awarded to the Singular team. More Your location: SINGULAR - A Singular Introduction to Commutative Algebra A textbook by This book has been written to learn commutative algebra in a new style, taking into account modern developments such as algorithmic and computational aspects. As soon as a new concept is introduced, it is shown how to handle it by computer. The computations are exemplified with the computer algebra system Singular, which was developed by the authors. Singular is a special system for polynomial computation with many features for global as well as for local commutative algebra and algebraic geometry. The book can be used for courses, seminars and as a basis for studying research papers in commutative algebra, computer algebra and algebraic geometry. The text starts with the theory of rings and modules and standard bases with emphasis on local rings and localization. It is followed by the central concepts of commutative algebra such as integral closure, dimension theory, primary decomposition, Hilbert function, completion, flatness and homological algebra. An appendix is devoted to algebraic geometry to show how geometric problems can be understood using commutative algebra. The book includes a CD with a distribution of Singular for various platforms (Unix/Linux, Windows, Macintosh) and which contains all examples and procedures explained in the text.

20. Commutative Algebra: Definition From Answers.com
An algebra in which the multiplication operation obeys the commutative law.