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  2. Logarithm - Wikipedia

    en.wikipedia.org/wiki/Logarithm

    In mathematics, the logarithm of a number is the exponent by which another fixed value, the base, must be raised to produce that number.For example, the logarithm of 1000 to base 10 is 3, because 1000 is 10 to the 3 rd power: 1000 = 10 3 = 10 × 10 × 10.

  3. The repeating decimal commonly written as 0.999... represents exactly the same quantity as the number one. Despite having the appearance of representing a smaller number, 0.999... is a symbol for the number 1 in exactly the same way that 0.333... is an equivalent notation for the number represented by the fraction 1 ⁄ 3. [436]

  4. Vigesimal - Wikipedia

    en.wikipedia.org/wiki/Vigesimal

    In French, this is true up to 16. In a number of other languages (such as Hebrew), the names of the numbers from 11 to 19 contain two words, but one of these words is a special "teen" form, which is different from the ordinary form of the word for the number 10, and it may in fact be only found in these names of the numbers 11–19.

  5. Roman numerals - Wikipedia

    en.wikipedia.org/wiki/Roman_numerals

    The Roman numerals, in particular, are directly derived from the Etruscan number symbols: 𐌠 , 𐌡 , 𐌢 , 𐌣 , and 𐌟 for 1, 5, 10, 50, and 100 (they had more symbols for larger numbers, but it is unknown which symbol represents which number). As in the basic Roman system, the Etruscans wrote the symbols that added to the desired ...

  6. Universe - Wikipedia

    en.wikipedia.org/wiki/Universe

    The physical universe is defined as all of space and time [a] (collectively referred to as spacetime) and their contents. [10] Such contents comprise all of energy in its various forms, including electromagnetic radiation and matter, and therefore planets, moons, stars, galaxies, and the contents of intergalactic space.

  7. 2012 phenomenon - Wikipedia

    en.wikipedia.org/wiki/2012_phenomenon

    Pakal's accession occurred on 9.9.2.4.8, equivalent to 27 July 615 AD in the proleptic Gregorian calendar. The inscription begins with Pakal's birthdate of 9.8.9.13.0 (24 March, 603 AD Gregorian) and then adds the Distance Number 10.11.10.5.8 to it, [51] arriving at a date of 21 October 4772 AD, more than 4,000 years after Pakal's time. [34 ...

  8. Carolinian people - Wikipedia

    en.wikipedia.org/wiki/Carolinian_people

    This is located on Saipan and is the location of Arabwal. The names of Carolinians who died during WWII are inscribed in granite panels. [ 28 ] [ 29 ] Under Japan Carolinians in kanakas like the one on the right still practice their culture.