21. Etbarr's Bookmarks Tagged With "category_theory" On Del.icio.us etbarr s items tagged category_theory view all, popular . to category_theory toread programming lectures saved by 201 other people on nov 20 http://del.icio.us/etbarr/category_theory

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SWiK login / register changes) Return to category_theory category_theory Tagging Details Tags 0 people have tagged this page. About SWiK Random Project Recent Edits All original text is available as Creative Commons Attribution-ShareAlike Privacy Terms Credits

23. Virtek Directory :: Science : Math : Algebra : Category Theory Back to the top page of the Virtek directory. Search. Top Science Math Algebra category_theory. Events, Journals, Research_Groups http://directory.virtek.com/Directory/Science/Math/Algebra/Category_Theory

Search: Top Science Math Algebra ... This directory section managed by Phil Allsopp

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26. LinkRoute.com - Top Science Math Algebra Category_Theory Events Past_Events Meetings in Category Theory which have already taken place. http://www.linkroute.com/XML//Top/Science/Math/Algebra/Category_Theory/Events/Pa

Make linkRoute your home page Add linkRoute to your favorites Share linkRoute with a friend Web www.linkroute.com Top Science Math Algebra ... Events Related Categories Categories Description WebSites Peripatetic Seminar on Sheaves and Logic. UCL, Louvain-la-Neuve, Belgium; 1617 October 1999. http://www.math.ucl.ac.be/~jibladze/pssl71/hi.html CatMAT 2000 Categorical Methods in Algebra and Topology - Commemorating 25 years of Category Theory in Bremen. University of Bremen, Germany; 2125 August 2000. http://katmat.math.uni-bremen.de/catmat2000/ University of Coimbra, Portugal; 1924 July 1999. http://www.mat.uc.pt/~ct99/ School on Category Theory and Applications University of Coimbra, Portugal; 1317 July 1999. http://www.mat.uc.pt/~scta/ Canadian Mathematical Society Annual Seminar. Dalhousie University, Halifax, Canada; 915 July 1995. http://www.mta.ca/~cat-dist/ct95.html CTCS'97 7th conference on Category Theory and Computer Science. S. Margherita Ligure, Italy; 46 September 1997. http://www.disi.unige.it/conferences/ctcs97/ CTCS'99 8th conference on Category Theory and Computer Science. Edinburgh, Scotland, UK; 1012 September 1999. http://www.dcs.ed.ac.uk/home/ctcs99/

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30. BOTW Directory - Science > Math > Algebra > Category Theory Top Science Math Algebra category_theory Submit Site. Events; Publications; Research_Groups. Categorical Myths and Legends Includes archived stories http://botw.org/top/Science/Math/Algebra/Category_Theory/

Directory Submit Site Free Advertising Sign In ... Sponsor This Category Free for 60 Days - Customize your message and appear alongside search results. Start your Free Trial today! Top: Science: Math: Algebra: ... Categorical Myths and Legends - Includes archived stories on category theorists. Categories List - Includes archived postings, list of conferences, mailings lists, TeX macros for diagrams as well as links to related websites and the theory and Applications of Categories journal. Categories, Quantization, and Much More - Article written by John Baez. Category Theory - Includes general definitions, examples and applications, history, and philosophical significance. Category Theory, Homological Algebra - Provides introduction, history, discussion of related area and subfields. Also includes list of textbooks and references, and links to related websites and selected topics. Computational Category Theory - Implementation of concepts and constructions using Standard ML. Includes full details of the project in pdf or postscript, and access to the programs used. CT Category Theory - Links to articles available in pdf or ps. Abstracts are also available.

31. Category:Category Theory - MyWikiBiz, Author Your Legacy Tacit extension. Retrieved from http//www.mywikibiz.com/Categorycategory_theory . Views. Category; Discussion; Edit; History. Personal tools http://www.mywikibiz.com/Category:Category_Theory

Quickly add a free MyWikiBiz directory listing! Category:Category Theory MyWikiBiz, Author Your Legacy — Sunday March 30, 2008 Jump to: navigation search Category Theory Articles in category "Category Theory" There are 2 articles in this category. C Cybernetics T Tacit extension Retrieved from " http://www.mywikibiz.com/Category:Category_Theory Views Category Discussion Edit History Personal tools Log in / create account Navigation Main page Add a listing Directory portals Recent changes ... Site Stats semantic SEO methods Attributes Categories Relations Search Toolbox What links here Related changes Upload file Special pages ... Permanent link MyWikiBiz sets audacious goal: 265 million pages. Please read all about it Some text is available under the terms of the GNU Free Documentation License . (See for details.) About MyWikiBiz var sc_project=1539526; var sc_invisible=0; var sc_partition=14; var sc_security="705e14e4";

32. Category Theory - Encyclopedia Article - Citizendium The category of schemes is one of the principal objects of study. Retrieved from http//en.citizendium.org/wiki/category_theory http://en.citizendium.org/wiki/Category_theory

We are creating the world's most trusted encyclopedia and knowledge base. The general public and experts collaborate, using their real names. Category theory From Citizendium, the Citizens' Compendium Jump to: navigation search Main Article Talk Related Articles Bibliography External Links This is a draft article , under development. These unapproved articles are subject to edit intro Category theory Definition A category consists of the following data: A class of "objects," denoted o b C For objects , a set Mor C A B such that is empty if and together with a "law of composition": (which we denote by ) having the following properties: Associativity: whenever the compositions are defined Identity: for every object there is an element i d A such that for all and Examples The category of sets The category of topological spaces The category of functors : if C and D are two categories, then there is a category consisting of all contravarient functors from C to D , where morphisms are natural transformations The category of schemes is one of the principal objects of study Retrieved from " http://en.citizendium.org/wiki/Category_theory

33. Talk:Category Theory - Indopedia, The Indological Knowledgebase Retrieved from http//www.indopedia.org/Talkcategory_theory.html . This page has been accessed 13 times. This page was last modified 0652, 19 Nov 2004 by http://www.indopedia.org/Talk:Category_theory.html

Indopedia Main Page FORUM Help ... Log in The Indology CMS Printable version Wikipedia Article Talk:Category theory ज्ञानकोश: - The Indological Knowledgebase Something else: I think it would be useful for the structure of the page to export some of the topics (the numerous examples are great but the presentation becomes not very concise). Especially "Natural transformations" could go to Natural transformation and there should be an extra page for "Equivalence of Categories", since there is really much more to say about this. The page would be clearer by just pointing to these topics (and giving very short explanations). Comments welcome - Markus 21/11/2003 OK, no comments, but I did it anyway. I did not destroy any information but added some (especially on equivalence of categories ). I think it is a much better structure now, also in the light of further extensions. Still the most basic definitions remain in category theory , but important further topics are now more easily recognized (not just by reading the examples...). I also included the suggested literature. Still comments are welcome. - Markus 25/11/2003 Must a functor be one-to-one? Can it assign the same object in D to many objects in C, or many objects in D to a single object in C? I can't see that this is ruled out by the requirements on a functor, but maybe I'm just not being smart enough.

34. Category Theory - MathWiki Sheaf; PCategory; Higher dimensional category; Product as Kan Extension. Retrieved from http//mathwiki.gc.cuny.edu/index.php/category_theory http://mathwiki.gc.cuny.edu/index.php/Category_Theory

Category Theory From MathWiki Category theory is, roughly speaking, the study of abstract structure. That is, a category theoretic view of a particular situation makes the underlying structure explicit, and illustrates precisely where content 'colors' this abstract structure. edit Topics in Category Theory Category Functor Functorial Factorization Natural Transformation ... Product as Kan Extension Retrieved from " http://mathwiki.gc.cuny.edu/index.php/Category_Theory Views Article Discussion Edit History Personal tools Create an account or log in Navigation Main Page Current events Courses Lectures ... Help Search Toolbox What links here Related changes Upload file Special pages ... Printable version This page was last modified 17:52, 19 December 2006. This page has been accessed 566 times. About MathWiki

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36. Category Theory The study of abstracted collections of mathematical objects, such as the category of sets or the category of vector spaces, together with abstracted http://www.daviddarling.info/encyclopedia/C/category_theory.html

MATHEMATICS A B C ... CONTACT entire Web this site category theory The study of abstracted collections of mathematical objects, such as the category of sets or the category of vector spaces , together with abstracted operations sending one object to another, such as the collection of functions from one set to another or linear transformations from one vector space to another. Related category MATHEMATICS Also on this site: Encyclopedia of History BACK TO TOP var site="s13space1234"

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38. Open Directory Project Science Math Algebra Category Theory Open Directory Project. Top Science Math Algebra category_theory. Events (10); Journals (2); Research Groups (13). See also http://www.targetpoint.pl/dmoz/index.php?browse=/Science/Math/Algebra/Category_T

39. Category Theory - Wikipedia Retrieved from http//nostalgia.wikipedia.org/wiki/category_theory . This page was last modified 1709, 17 December 2001. Content is available under GNU http://nostalgia.wikipedia.org/wiki/Category_theory

Category theory From Wikipedia HomePage Recent changes View source Page history ... Log in Special pages Double redirects Broken redirects Disambiguation pages Log in Preferences My watchlist Recent changes Upload file File list Gallery of new files User list Statistics Random page Orphaned pages Uncategorized pages Uncategorized categories Uncategorized files Uncategorized templates Unused categories Unused files Wanted pages Wanted categories Most linked to pages Most linked to categories Most linked-to templates Pages with the most categories Most linked to files Pages with the most revisions Pages with the fewest revisions Short pages Long pages New pages Oldest pages Dead-end pages Protected pages Protected titles All pages Prefix index List of blocked IP addresses and usernames User contributions What links here Book sources Categories Export pages Version System messages Logs MIME search Search for duplicate files List redirects Unused templates Random redirect Pages without language links File path Search List of Wikimedia wikis Expand templates CategoryTree Gadgets Parser diff test Cross-namespace links Wikimedia Board of Trustees election Search web links Printable version Category theory is a mathematical theory that deals in an abstract way with mathematical structures and relationships between them. Although originally developed in the context of

40. Category Theory - Wikipedia Category theory. Category theory is a mathematical theory that deals in an abstract way with mathematical structures and relationships between them. http://facetroughgemstones.com/wikipedia/ca/Category_theory.html

Office Supplies Buy Posters A-Z Products Website Advertising ... Category theory Category theory is a mathematical theory that deals in an abstract way with mathematical structures and relationships between them. Although originally developed in the context of algebraic geometry algebraic topology and universal algebra , it is now also used in various other branches of mathematics. Special categories called topoi can even serve as an alternative to set theory as the foundation of mathematics. Category theory is half-jokingly known as "abstract nonsense". Category theory is also used in a foundational way in functional programming , for example to discuss the idea of typed lambda calculus in terms of cartesian-closed categories. A category attempts to capture the essence of a class of related mathematical objects, for instance the class of groups . Instead of focusing on the individual objects (groups) as has been done traditionally, the morphisms , i.e. the structure preserving maps between these objects, are emphasized. In the example of groups, these are the group homomorphisms . Then it becomes possible to relate different categories by functors , generalizations of functions which associate to every object of one category an object of another category and to every morphism in the first category a morphism in the second. Very commonly, certain "natural constructions", such as the

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