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  2. Luhn algorithm - Wikipedia

    en.wikipedia.org/wiki/Luhn_algorithm

    Luhn algorithm. The Luhn algorithm or Luhn formula, also known as the " modulus 10" or "mod 10" algorithm, named after its creator, IBM scientist Hans Peter Luhn, is a simple check digit formula used to validate a variety of identification numbers. It is described in US patent 2950048A, granted on 23 August 1960. [ 1]

  3. Modular arithmetic - Wikipedia

    en.wikipedia.org/wiki/Modular_arithmetic

    Adding 4 hours to 9 o'clock gives 1 o'clock, since 13 is congruent to 1 modulo 12. In mathematics, modular arithmetic is a system of arithmetic for integers, where numbers "wrap around" when reaching a certain value, called the modulus. The modern approach to modular arithmetic was developed by Carl Friedrich Gauss in his book Disquisitiones ...

  4. Legal issues with fan fiction - Wikipedia

    en.wikipedia.org/wiki/Legal_issues_with_fan_fiction

    Under U.S. copyright law, the legality of a given work of fanfiction will depend principally on three legal doctrines: (1) copyrightability of the underlying source work; (2) the derivative work right; and (3) fair use . To have copyright protection under U.S. law, a work must be an "original [work] of authorship fixed in any tangible medium of ...

  5. Ekushey Book Fair - Wikipedia

    en.wikipedia.org/wiki/Ekushey_Book_Fair

    The Ekushey Book Fair, [a] officially called the Eternal Twenty-first Book Fair, [b] [c] is the largest book fair in Bangladesh. [1] [2] Organised annually in February by Bangla Academy in Dhaka, the month-long event is free to all. In 2024, the fair attracted six million visitors and generated a record ৳600 million (US$5.1 million) in book ...

  6. Authors Guild, Inc. v. Google, Inc. - Wikipedia

    en.wikipedia.org/wiki/Authors_Guild,_Inc._v...

    Authors Guild, Inc. v. Google, Inc. Authors Guild v. Google 804 F.3d 202 ( 2nd Cir. 2015) was a copyright case heard in federal court for the Southern District of New York, and then the Second Circuit Court of Appeals between 2005 and 2015. It concerned fair use in copyright law and the transformation of printed copyrighted books into an online ...

  7. Dhaka International Book Fair - Wikipedia

    en.wikipedia.org/wiki/Dhaka_International_Book_Fair

    A few publishing houses publish new books on the occasion of this fair. Commission is available in a certain amount (usually 25%) of the book. [1] Fair also has more seminars, concerts, new book clippings and various discussion programs. Tickets for the fair are available for the ticket, the ticket is to be purchased with the specified entry price.

  8. AOL Mail

    mail.aol.com

    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

  9. Frankfurt Book Fair - Wikipedia

    en.wikipedia.org/wiki/Frankfurt_Book_Fair

    The Frankfurt Book Fair (German: Frankfurter Buchmesse, abbr. FBM) is the world's largest trade fair for books, based on the number of publishing companies represented. The five-day annual event in mid-October is held at the Frankfurt Trade Fair grounds in Frankfurt am Main, Germany. The first three days are restricted exclusively to ...