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  2. List of Dewey Decimal classes - Wikipedia

    en.wikipedia.org/wiki/List_of_Dewey_Decimal_classes

    Download as PDF; Printable version; In other projects ... 360 Social problems and social services. ... 779 Photographic images; 780 Music.

  3. Dewey Decimal Classification - Wikipedia

    en.wikipedia.org/wiki/Dewey_Decimal_Classification

    A library bookshelf in Hong Kong classified using the New Classification Scheme for Chinese Libraries, an adaptation of the Dewey Classification scheme. The Dewey Decimal Classification (DDC) (Dewey pronounced: /do-e/), colloquially known as the Dewey Decimal System, is a proprietary library classification system which allows new books to be added to a library in their appropriate location ...

  4. Positional notation - Wikipedia

    en.wikipedia.org/wiki/Positional_notation

    Decimal fractions were first developed and used by the Chinese in the form of rod calculus in the 1st century BC, and then spread to the rest of the world. [6] [7] J. Lennart Berggren notes that positional decimal fractions were first used in the Arab by mathematician Abu'l-Hasan al-Uqlidisi as early as the 10th century. [8]

  5. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    Many easily stated number problems have solutions that require sophisticated methods, often from across mathematics. A prominent example is Fermat's Last Theorem . This conjecture was stated in 1637 by Pierre de Fermat, but it was proved only in 1994 by Andrew Wiles , who used tools including scheme theory from algebraic geometry , category ...

  6. United States dollar - Wikipedia

    en.wikipedia.org/wiki/United_States_dollar

    Download as PDF; Printable version; ... Americans also learned counting in non-decimal bits of 12 + 1 ... These images are to scale at 2.5 pixels per millimetre.

  7. Book - Wikipedia

    en.wikipedia.org/wiki/Book

    In woodblock printing, a relief image of an entire page is carved into blocks of wood, inked, and used to print copies of that page. It originated in the Han dynasty before 220 AD, used to print textiles and later paper, and was widely used throughout East Asia. The oldest dated book printed by this method is The Diamond Sutra (868 AD).

  8. Dime (United States coin) - Wikipedia

    en.wikipedia.org/wiki/Dime_(United_States_coin)

    The word dime comes from the Old French disme (Modern French dîme), meaning "tithe" or "tenth part", from the Latin decima [pars]. [1] The dime is currently the only United States coin in general circulation that is not denominated in terms of dollars or cents. As of 2011, the dime cost 5.65 cents to produce. [2]

  9. Science - Wikipedia

    en.wikipedia.org/wiki/Science

    Science is a systematic discipline that builds and organises knowledge in the form of testable hypotheses and predictions about the universe. [1] [2] Modern science is typically divided into two or three major branches: [3] the natural sciences (e.g., physics, chemistry, and biology), which study the physical world; and the social sciences (e.g., economics, psychology, and sociology), which ...

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