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  2. Roman numerals - Wikipedia

    en.wikipedia.org/wiki/Roman_numerals

    Roman numerals are a numeral system that originated in ancient Rome and remained the usual way of writing numbers throughout Europe well into the Late Middle Ages.Numbers are written with combinations of letters from the Latin alphabet, each with a fixed integer value.

  3. Roman numeral analysis - Wikipedia

    en.wikipedia.org/wiki/Roman_numeral_analysis

    The accompaniment performers translate the Roman numerals to the specific chords that would be used in a given key. In the key of E major, the diatonic chords are: E maj7 becomes I maj7 (also I ∆7, or simply I) F ♯ m 7 becomes II m7 (also II −7, II min7, IIm, or II −) G ♯ m 7 becomes III m7 (also III −7, III min7, IIIm, or III −)

  4. List of numeral systems - Wikipedia

    en.wikipedia.org/wiki/List_of_numeral_systems

    "A base is a natural number B whose powers (B multiplied by itself some number of times) are specially designated within a numerical system." [1]: 38 The term is not equivalent to radix, as it applies to all numerical notation systems (not just positional ones with a radix) and most systems of spoken numbers. [1]

  5. List of types of numbers - Wikipedia

    en.wikipedia.org/wiki/List_of_types_of_numbers

    Roman numerals: The numeral system of ancient Rome, still occasionally used today, mostly in situations that do not require arithmetic operations. Tally marks: Usually used for counting things that increase by small amounts and do not change very quickly. Fractions: A representation of a non-integer as a ratio of two integers.

  6. Numeral system - Wikipedia

    en.wikipedia.org/wiki/Numeral_system

    The first true written positional numeral system is considered to be the Hindu–Arabic numeral system.This system was established by the 7th century in India, [1] but was not yet in its modern form because the use of the digit zero had not yet been widely accepted.

  7. Alphabetic numeral system - Wikipedia

    en.wikipedia.org/wiki/Alphabetic_numeral_system

    An alphabetic numeral system employs the letters of a script in the specific order of the alphabet in order to express numerals. In Greek, letters are assigned to respective numbers in the following sets: 1 through 9, 10 through 90, 100 through 900, and so on. Decimal places are represented by a single symbol.

  8. 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.

  9. Sign-value notation - Wikipedia

    en.wikipedia.org/wiki/Sign-value_notation

    In Roman numerals, for example, X means ten and L means fifty, so LXXX means eighty (50 + 10 + 10 + 10). Although signs may be written in a conventional order the value of each sign does not depend on its place in the sequence, and changing the order does not affect the total value of the sequence in an additive system.