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  2. Error correction code - Wikipedia

    en.wikipedia.org/wiki/Error_correction_code

    Turbo coding is an iterated soft-decoding scheme that combines two or more relatively simple convolutional codes and an interleaver to produce a block code that can perform to within a fraction of a decibel of the Shannon limit. Predating LDPC codes in terms of practical application, they now provide similar performance.

  3. Pi - Wikipedia

    en.wikipedia.org/wiki/Pi

    The number π (/ p aɪ / ⓘ; spelled out as "pi") is a mathematical constant, approximately equal to 3.14159, that is the ratio of a circle's circumference to its diameter.It appears in many formulae across mathematics and physics, and some of these formulae are commonly used for defining π, to avoid relying on the definition of the length of a curve.

  4. Cave of the Patriarchs massacre - Wikipedia

    en.wikipedia.org/wiki/Cave_of_the_Patriarchs...

    The Cave of the Patriarchs massacre, also known as the Ibrahimi Mosque massacre [2] or the Hebron massacre, [3] was a mass shooting carried out by Baruch Goldstein, an American-Israeli physician and extremist of the far-right ultra-Zionist Kach movement.

  5. Natural number - Wikipedia

    en.wikipedia.org/wiki/Natural_number

    It is a free monoid on one generator. This commutative monoid satisfies the cancellation property, so it can be embedded in a group. The smallest group containing the natural numbers is the integers. If 1 is defined as S(0), then b + 1 = b + S(0) = S(b + 0) = S(b). That is, b + 1 is simply the successor of b.

  6. Craps - Wikipedia

    en.wikipedia.org/wiki/Craps

    Older bank crap table layout with supplemental wagers, as typical before Winn introduced "Don't Pass" The craps numbers of 2, 3, and 12 are similarly derived from Hazard. If the main is seven, then the two-dice sum of twelve is added to the crabs as a losing number on the first dice roll. This condition is retained in the simplified game called ...

  7. Personal computer - Wikipedia

    en.wikipedia.org/wiki/Personal_computer

    An artist's depiction of a 2000s-era desktop-style personal computer, which includes a metal case with the computing components, a display and a keyboard (mouse not shown). A personal computer, often referred to as a PC or simply computer, is a computer designed for individual use. [1]

  8. Palaeography - Wikipedia

    en.wikipedia.org/wiki/Palaeography

    Palaeography is an essential skill for many historians, semioticians and philologists, as it addresses a suite of interrelated lines of inquiry.First, since the style of an alphabet, grapheme or sign system set within a register in each given dialect and language has evolved constantly, it is necessary to know how to decipher its individual substantive, occurrence make-up and constituency.