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  2. ISBN - Wikipedia

    en.wikipedia.org/wiki/ISBN

    According to the 2001 edition of the International ISBN Agency's official user manual, [49] the ISBN-10 check digit (which is the last digit of the 10-digit ISBN) must range from 0 to 10 (the symbol 'X' is used for 10), and must be such that the sum of the ten digits, each multiplied by its (integer) weight, descending from 10 to 1, is a ...

  3. Triple bar - Wikipedia

    en.wikipedia.org/wiki/Triple_bar

    The closely related code point U+2262 ≢ NOT IDENTICAL TO (≢, ≢) is the same symbol with a slash through it, indicating the negation of its mathematical meaning. [ 1 ] In LaTeX mathematical formulas, the code \equiv produces the triple bar symbol and \not\equiv produces the negated triple bar symbol ≢ {\displaystyle \not ...

  4. Wikipedia:Book sources - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Book_sources

    To search for a different book, type that book's individual ISBN into this ISBN search box. Spaces and hyphens in the ISBN do not matter. Also, the number starts after the colon for "ISBN-10:" and "ISBN-13:" numbers. An ISBN identifies a specific edition of a book. Any given title may therefore have a number of different ISBNs.

  5. Bimetallism - Wikipedia

    en.wikipedia.org/wiki/Bimetallism

    The exchange rate between the weights of gold and silver was 1 to 13.3 at the time. [ 1 ] Bimetallism , [ a ] also known as the bimetallic standard , is a monetary standard in which the value of the monetary unit is defined as equivalent to certain quantities of two metals, typically gold and silver , creating a fixed rate of exchange between them.

  6. Oxford Dictionary of English - Wikipedia

    en.wikipedia.org/wiki/Oxford_Dictionary_of_English

    Oxford Dictionary of English, Revised Edition, Oxford University Press, C. Soanes and A. Stevenson, ISBN 0-19-861057-2, ISBN 978-0-19-861057-1, Publication date: 11 August 2005, hard cover, 270 × 208 mm.

  7. Joyce Farrell - Wikipedia

    en.wikipedia.org/wiki/Joyce_Farrell

    Joyce Farrell is the author of many programming books for Course Technology, a part of Cengage Learning. [1] Her books are widely used as textbooks in higher education institutions.

  8. Concrete number - Wikipedia

    en.wikipedia.org/wiki/Concrete_number

    For example, "five apples" and "half of a pie" are concrete numbers, while "five" and "one half" are abstract numbers. In mathematics the term "number" is usually taken to mean an abstract number. A denominate number is a type of concrete number with a unit of measure attached with it.

  9. Critique of Dialectical Reason - Wikipedia

    en.wikipedia.org/wiki/Critique_of_Dialectical_Reason

    0-86091-757-6 (vol. 1) 0-86091-311-2 (vol. 2) Critique of Dialectical Reason ( French : Critique de la raison dialectique ) is a 1960 book by the philosopher Jean-Paul Sartre , in which the author further develops the existentialist Marxism he first expounded in his essay Search for a Method (1957). [ 1 ]