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  2. 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 ...

  3. List of numeral systems - Wikipedia

    en.wikipedia.org/wiki/List_of_numeral_systems

    A form of unary notation called Church encoding is used to represent numbers within lambda calculus. Some email spam filters tag messages with a number of asterisks in an e-mail header such as X-Spam-Bar or X-SPAM-LEVEL. The larger the number, the more likely the email is considered spam. 10: Bijective base-10: To avoid zero: 26: Bijective base-26

  4. Roman numeral analysis - Wikipedia

    en.wikipedia.org/wiki/Roman_numeral_analysis

    An upper case numeral that is not followed by a symbol is understood as a major chord. The use of Roman numerals enables the rhythm section performers to play the song in any key requested by the bandleader or lead singer. The accompaniment performers translate the Roman numerals to the specific chords that would be used in a given key.

  5. Numeral system - Wikipedia

    en.wikipedia.org/wiki/Numeral_system

    The number the numeral represents is called its value. Not all number systems can represent the same set of numbers; for example, Roman numerals cannot represent the number zero. Ideally, a numeral system will: Represent a useful set of numbers (e.g. all integers, or rational numbers)

  6. 4 - Wikipedia

    en.wikipedia.org/wiki/4

    Two modern handwritten fours Sculpted date "1481" in the Convent church of Maria Steinach in Algund, South Tirol, Italy.The upward loop signifies the number 4. Brahmic numerals represented 1, 2, and 3 with as many lines. 4 was simplified by joining its four lines into a cross that looks like the modern plus sign.

  7. List of types of numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_types_of_numbers

    Computable number: A real number whose digits can be computed by some algorithm. Period: A number which can be computed as the integral of some algebraic function over an algebraic domain. Definable number: A real number that can be defined uniquely using a first-order formula with one free variable in the language of set theory.

  8. Biggest problems facing College Football Playoff remain — and ...

    www.aol.com/sports/biggest-problems-facing...

    Right now the first-round sites will be on campuses — No. 9 Tennessee at No. 8 Ohio State, No. 10 Indiana at No. 7 Notre Dame, No. 11 SMU at No. 6 Penn State and No. 12 Clemson at No. 5 Texas.

  9. Number Forms - Wikipedia

    en.wikipedia.org/wiki/Number_Forms

    Roman Numeral One 2160 8544 Ⅱ II: 2 Roman Numeral Two 2161 8545 Ⅲ III: 3 Roman Numeral Three 2162 8546 Ⅳ IV: 4 Roman Numeral Four 2163 8547 Ⅴ V: 5 Roman Numeral Five 2164 8548 Ⅵ VI: 6 Roman Numeral Six 2165 8549 Ⅶ VII: 7 Roman Numeral Seven 2166 8550 Ⅷ VIII: 8 Roman Numeral Eight 2167 8551 Ⅸ IX: 9 Roman Numeral Nine 2168 8552 ...