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  2. Latin numerals - Wikipedia

    en.wikipedia.org/wiki/Latin_Numerals

    The Latin numerals are the words used to denote numbers within the Latin language. They are essentially based on their Proto-Indo-European ancestors, and the Latin cardinal numbers are largely sustained in the Romance languages. In Antiquity and during the Middle Ages they were usually represented by Roman numerals in writing.

  3. 8 - Wikipedia

    en.wikipedia.org/wiki/8

    8 is a composite number and the first number which is neither prime nor semiprime. By Mihăilescu's Theorem , it is the only nonzero perfect power that is one less than another perfect power. 8 is the first proper Leyland number of the form x y + y x , where in its case x and y both equal 2.

  4. Numeral prefix - Wikipedia

    en.wikipedia.org/wiki/Numeral_prefix

    In Latin and Greek, the ordinal forms are also used for fractions for amounts higher than 2; only the fraction ⁠ 1 / 2 ⁠ has special forms. The same suffix may be used with more than one category of number, as for example the orginary numbers secondary and tertiary and the distributive numbers binary and ternary.

  5. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    Mean value: If x is a variable that takes its values in some sequence of numbers S, then ¯ may denote the mean of the elements of S. 5. Negation : Sometimes used to denote negation of the entire expression under the bar, particularly when dealing with Boolean algebra .

  6. List of Latin abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_Latin_abbreviations

    The meaning is distinct from "unanimously"; "nem. con." simply means that nobody voted against. Thus there may have been abstentions from the vote. [citation needed] no. numero (singular), nos. (plural) "number" Used as a common abbreviation for "number" in all forms of writing. op. cit. opere citato "(in) the work cited"

  7. IUPAC numerical multiplier - Wikipedia

    en.wikipedia.org/wiki/IUPAC_numerical_multiplier

    The numbers 200-900 would be confused easily with 22 to 29 if they were used in chemistry. khīlioi = 1000, diskhīlioi = 2000, triskhīlioi = 3000, etc. 13 to 19 are formed by starting with the Greek word for the number of ones, followed by και (the Greek word for 'and'), followed by δέκα (the Greek word for 'ten').

  8. Roman numerals - Wikipedia

    en.wikipedia.org/wiki/Roman_numerals

    Meaning 1 ⁄ 1728 =12 −3 𐆕 ... It might have helped that C was the initial letter of CENTUM, Latin for "hundred". The numbers 500 and 1000 were denoted by V or ...

  9. Liber Abaci - Wikipedia

    en.wikipedia.org/wiki/Liber_Abaci

    The 2, 8, and 9 resemble Arabic numerals more than Eastern Arabic numerals or Indian numerals. The Liber Abaci or Liber Abbaci [1] (Latin for "The Book of Calculation") was a 1202 Latin work on arithmetic by Leonardo of Pisa, posthumously known as Fibonacci.