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  2. Chegg - Wikipedia

    en.wikipedia.org/wiki/Chegg

    Purdue University prohibits students soliciting answers using Chegg's homework help: "While Chegg can be helpful to access textbooks and more practice problems, using this resource to find assignment answers is considered academic dishonesty because it is a form of copying and plagiarism.". [55]

  3. History of mathematics - Wikipedia

    en.wikipedia.org/wiki/History_of_mathematics

    The history of mathematics deals with the origin of discoveries in mathematics and the mathematical methods and notation of the past. Before the modern age and the worldwide spread of knowledge, written examples of new mathematical developments have come to light only in a few locales.

  4. Penguin Classics - Wikipedia

    en.wikipedia.org/wiki/Penguin_Classics

    The Penguin Collectors' Society have published two bibliographies of the early, pre-ISBN (referred to as 'L') editions: firstly in 1994, with an update in 2008. Also in 2008, Penguin Books USA published a complete annotated listing of all Penguin Classics titles in a single paperback volume in the style of its Penguin Classics books. The list ...

  5. The Penguin Dictionary of Curious and Interesting Numbers

    en.wikipedia.org/wiki/The_Penguin_Dictionary_of...

    The Penguin Dictionary of Curious and Interesting Numbers is a reference book for recreational mathematics and elementary number theory written by David Wells. The first edition was published in paperback by Penguin Books in 1986 in the UK, and a revised edition appeared in 1997 ( ISBN 0-14-026149-4 ).

  6. Penguin Books - Wikipedia

    en.wikipedia.org/wiki/Penguin_Books

    Penguin's English edition of Yuri Krimov's novel The Tanker "Derbent". The Second World War saw Penguin emerge as a national institution. Though it had no formal role in the war effort, it was integral to it thanks to the publication of such bestselling manuals as Keeping Poultry and Rabbits on Scraps and Aircraft Recognition, and supplying books for the services and British POWs.

  7. Author Solutions - Wikipedia

    en.wikipedia.org/wiki/Author_Solutions

    Author Solutions is the parent company of a number of vanity presses, including AuthorHouse, iUniverse, Trafford Publishing, Xlibris, Palibrio, and Booktango. [2] The company is headquartered in Bloomington, Indiana , and has been owned by Najafi Companies since 2015.

  8. List of Penguin Classics - Wikipedia

    en.wikipedia.org/wiki/List_of_Penguin_Classics

    In 1996, Penguin Books published as a paperback A Complete Annotated Listing of Penguin Classics and Twentieth-Century Classics (ISBN 0-14-771090-1). This article covers editions in the series: black label (1970s), colour-coded spines (1980s), the most recent editions (2000s), and Little Clothbound Classics Series (2020s).

  9. Pigeonhole principle - Wikipedia

    en.wikipedia.org/wiki/Pigeonhole_principle

    In mathematics, the pigeonhole principle states that if n items are put into m containers, with n > m, then at least one container must contain more than one item. [1] For example, of three gloves, at least two must be right-handed or at least two must be left-handed, because there are three objects but only two categories of handedness to put ...