- Vector calculus - From Wikipedia, the free encyclopedia
Vector calculus (also called vector analysis) is a field of mathematics concerned with multivariate real analysis of vectors in two or more dimensions. It consists of a suite of formulas and problem solving techniques very useful for engineering and physics. Vector analysis has its origin in quaternion analysis, and was formulated by the American scientist, J. Willard Gibbs [1]. It concerns vector fields, which associate a vector to every point in space, and scalar fields, which associate a scalar to every point in space. For example, the temperature of a swimming pool is a scalar field: to each point we associate a scalar value of temperature. The water flow in the same pool is a vector field: to each point we associate a velocity vector.
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in Educational > Mathematics > Ideas/Explanations/Wiki or Mathworld lookups
Note: The summary of gradient, curl and divergence is particularly good. - Iggy Pop - Wikipedia, the free encyclopedia
James Newell Osterberg, Jr. (born on April 21, 1947 in Muskegon, Michigan), better known by his stage name Iggy Pop, is an American punk rock singer and occasional actor. Although he has had only limited commercial success, Pop is considered one of the most important innovators of punk rock and related styles.
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in Lifestyle > Music - In medias res (Latin for "into the middle of things") - Wikipedia
In medias res (Latin for "into the middle of things") is a literary technique where the narrative starts in the middle of the story instead of from its beginning (ab ovo or ab initio).
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in Educational > Words/Phrases - Unofficial Ubuntu dapper Wiki
Unofficial Ubuntu 6.06 (Dapper Drake) Starter Guide This guide was started by Chua Wen Kiat (Kuala Lumpur, Malaysia). It is now being maintained by the Linux Center of University of Latvia, and everyone else who is willing to contribute.
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in Computing > Linux by 8 users - Wiki - From Wikipedia, the free encyclopedia
A wiki (IPA: [ˈwɪ.kiː] <WICK-ee> or [ˈwiː.kiː] <WEE-kee>[1]) is a type of website that allows users to easily add, remove, or otherwise edit and change some available content, sometimes without the need for registration. This ease of interaction and operation makes a wiki an effective tool for collaborative authoring. The term wiki can also refer to the collaborative software itself (wiki engine) that facilitates the operation of such a website (see wiki software), or to certain specific wiki sites, including the computer science site (and original wiki), WikiWikiWeb, and the online encyclopedias such as Wikipedia. The first wiki, WikiWikiWeb, is named after the "Wiki Wiki" line of Chance RT-52 buses in Honolulu International Airport, Hawaii.
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in Computing > World Wide Web > Collaboration Tools by 9 users - Andrew Wiles, Wikipedia
Sir Andrew John Wiles (born April 11, 1953) is a British-American mathematician, the Eugene Higgins Professor of Mathematics at Princeton University, Princeton mathematics department chair, and member of scientific advisory board of the Clay Mathematics Institute. One of the major highlights of his career has been an announcement of a proof of Fermat's Last Theorem in 1993 and a discovery of a beautiful method to complete that proof in 1994.
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in Educational > Mathematics > People - Atefah Sahaaleh - Wikipedia, the free encyclopedia
Atefeh Rajabi Sahaaleh (Persian: عاطفه رجبی صحاله) (lived 1988 to August 15, 2004) was a 16-year-old Iranian girl who was executed in Iran after being sentenced to death by an Iranian judge, Haji Rezai, for allegedly having committed "acts incompatible with chastity": Based on judicial records, by the time Atefeh was 16, she had been convicted five times of having sex with unmarried men[1] , and for removing her hijab while arguing with her judge in court.
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in Political > News
Note: There's a doco you can watch at: http://www.youtube.com/watch?v=tHqnSe3EqpA - Baryogenesis
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in Educational > Cosmology by 2 users - Bertolt Brecht - Wikipedia, the free encyclopedia
Brecht wanted the answer to Lenin’s question ‘Wie und was soll man lernen?’ ('How and what should we learn?'). He created an influential theory of theatre, the epic theatre, wherein a play should not cause the spectator to emotionally identify with the action before him or her, but should instead provoke rational self-reflection and a critical view of the actions on the stage. He believed that the experience of a climactic catharsis of emotion left an audience complacent. Instead, he wanted his audiences to use this critical perspective to identify social ills at work in the world and be moved to go forth from the theatre and effect change.
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in Art > Theatre
Note: Bertolt Brecht (born Eugen Berthold Friedrich Brecht February 10, 1898 – August 14, 1956) was an influential German communist dramatist, stage director, and poet of the 20th century. - Big Bang
Wikipedia, the free encyclopedia
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in Educational > Cosmology - Bijection - wikipedia
In mathematics, a bijection, or a bijective function is a function f from a set X to a set Y with the property that, for every y in Y, there is exactly one x in X such that f(x) = y. Alternatively, f is bijective if it is a one-to-one correspondence between those sets; i.e., both one-to-one (injective) and onto (surjective).[1] (See also Bijection, injection and surjection.)
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in Educational > Mathematics > Ideas/Explanations/Wiki or Mathworld lookups - Bijection, injection and surjection - Wikipedia
In mathematics, injections, surjections and bijections are classes of functions distinguished by the manner in which arguments (input expressions from the domain) and images (output expressions from the codomain) are related or mapped to each other.
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in Educational > Mathematics > Ideas/Explanations/Wiki or Mathworld lookups
Note: Need to learn this. - Caffeine, Wikipedia
Caffeine (sometimes called guaranine when found in guarana, mateine when found in mate, and theine when found in tea) is a xanthine alkaloid found in the leaves and beans of the coffee tree, in tea, yerba mate, guarana berries, and in small quantities in cocoa, the kola nut and the Yaupon holly. In plants, caffeine acts as a natural pesticide that paralyzes and kills many insects feeding upon them.
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in Lifestyle > Drugs - Cellar door, Wikipedia
Cellar door is a combination of words in the English language once characterized by J. R. R. Tolkien to have an especially beautiful sound.
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in jelly > random - COBE - Wikipedia, the free encyclopedia
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in Educational > Cosmology - Cosmic microwave background radiation
Wikipedia, the free encyclopedia
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in Educational > Cosmology - Dimethyltryptamine (DMT), Wikipedia
Dimethyltryptamine, also known as DMT and N,N-dimethyltryptamine, is a hallucinogenic tryptamine, similar in structure to the neurotransmitter serotonin. DMT is created in small amounts by the human body during normal metabolism. Pure DMT at room temperature is a colorless waxy or crystalline solid. DMT was first chemically synthesized in 1931.
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in Lifestyle > Drugs - DLL hell, Wikipedia
In computing, DLL hell is the colourful phrase for dynamic-link library problems coined by Rick Anderson in his January 2000 paper, The End of DLL Hell. Although the term DLL Hell had been used internally for some time within Microsoft, this was the first public article to do so. DLL Hell encompasses the difficulties of managing dynamic-link libraries (DLLs) in Microsoft Windows operating systems.
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in Computing > Software - Donnie Darko, Wikipedia
Donnie Darko is a 2001 cult film, the first by writer and director Richard Kelly. Set in 1988, the movie is a psychological science fiction film about a boy named Donnie Darko who, after narrowly escaping death, has visions of an eerie, bipedal, giant rabbit named Frank who predicts when the world will end. It stars Jake Gyllenhaal as Donnie, Jena Malone, Mary McDonnell, Drew Barrymore, Patrick Swayze, Noah Wyle and Maggie Gyllenhaal.
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in Media > Movies and TV shows - Fixed point property - Wikipedia
In mathematics, a topological space X has the fixed point property if all continuous mappings from X to X have a fixed point.
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in Educational > Mathematics > Ideas/Explanations/Wiki or Mathworld lookups
Note: In mathematics, a fixed point (sometimes shortened to fixpoint) of a function is a point that is mapped to itself by the function... http://en.wikipedia.org/wiki/Fixed_point_%28mathematics%29
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