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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. Smith & Wesson Model 10 - Wikipedia

    en.wikipedia.org/wiki/Smith_&_Wesson_Model_10

    The Smith & Wesson Model 10, previously known as the Smith & Wesson .38 Hand Ejector Model of 1899, the Smith & Wesson Military & Police or the Smith & Wesson Victory Model, is a K-frame [2] revolver of worldwide popularity. In production since 1899, the Model 10 is a six-shot, .38 Special, double-action revolver with fixed sights.

  5. Luhn mod N algorithm - Wikipedia

    en.wikipedia.org/wiki/Luhn_mod_N_algorithm

    Luhn mod N algorithm. The Luhn mod N algorithm is an extension to the Luhn algorithm (also known as mod 10 algorithm) that allows it to work with sequences of values in any even-numbered base. This can be useful when a check digit is required to validate an identification string composed of letters, a combination of letters and digits or any ...

  6. Modulo - Wikipedia

    en.wikipedia.org/wiki/Modulo

    Modulo. In computing, the modulo operation returns the remainder or signed remainder of a division, after one number is divided by another (called the modulus of the operation). Given two positive numbers a and n, a modulo n (often abbreviated as a mod n) is the remainder of the Euclidean division of a by n, where a is the dividend and n is the ...

  7. List of United States fighter aircraft - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States...

    2 converted from VE-7 for U.S. Army; 22 built for the U.S. Army, 17 built for the U.S. Navy. Unknown Unknown 24 17 HA: Fighter/mail plane: Curtiss Aeroplane and Motor Company 1918 Unknown 6 18T Kirkham: Two-seated fighter triplane Curtiss Engineering Corporation: Intended to protect bombing aircraft over France. 1918 1919 Unknown M-8

  8. Lockheed Model 10 Electra - Wikipedia

    en.wikipedia.org/wiki/Lockheed_Model_10_Electra

    Lockheed Model 10 Electra. The Lockheed Model 10 Electra is an American twin-engined, all-metal monoplane airliner developed by the Lockheed Aircraft Corporation, which was produced primarily in the 1930s to compete with the Boeing 247 and Douglas DC-2. The type gained considerable fame as one was flown by Amelia Earhart and Fred Noonan on ...

  9. Giffords group commits $15 million to boost Harris and gun ...

    www.aol.com/news/giffords-gun-safety-group...

    Brown declined to comment on the fact that Harris is vetting a co-founder of the group, Sen. Mark Kelly, D-Ariz., former Rep. Giffords’ husband, saying it isn’t getting involved in “the vice ...