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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. Vinculum (symbol) - Wikipedia

    en.wikipedia.org/wiki/Vinculum_(symbol)

    Vinculum (symbol) repeated 0.1428571428571428571... A vinculum (from Latin vinculum 'fetter, chain, tie') is a horizontal line used in mathematical notation for various purposes. It may be placed as an overline or underline above or below a mathematical expression to group the expression's elements. Historically, vincula were extensively used ...

  4. Attic numerals - Wikipedia

    en.wikipedia.org/wiki/Attic_numerals

    The Attic numerals were a decimal (base 10) system, like the older Egyptian and the later Etruscan, Roman, and Hindu-Arabic systems. Namely, the number to be represented was broken down into simple multiples (1 to 9) of powers of ten — units, tens, hundred, thousands, etc.. Then these parts were written down in sequence, in order of ...

  5. Tally marks - Wikipedia

    en.wikipedia.org/wiki/Tally_marks

    Roman numerals, the Brahmi and Chinese numerals for one through three (一 二 三), and rod numerals were derived from tally marks, as possibly was the ogham script. Base 1 arithmetic notation system is a unary positional system similar to tally marks. It is rarely used as a practical base for counting due to its difficult readability.

  6. List of Latin-script letters - Wikipedia

    en.wikipedia.org/wiki/List_of_Latin-script_letters

    Azerbaijani, Gagauz, Turkish and Turkmen, also used in the Roman alphabets of Tatar, Crimean Tatar, Bashkir, Kazakh, Chechen, and Kurdish. Ș ș: S with comma below: Romanian, cf. comma-below versus cedilla: S̨ s̨: S with ogonek: Moroccan Arabic transliteration, Romance dialectology Š̨ š̨: S with ogonek and caron: Avestan transliteration

  7. List of proofreader's marks - Wikipedia

    en.wikipedia.org/wiki/List_of_proofreader's_marks

    This article is a list of standard proofreader's marks used to indicate and correct problems in a text. Marks come in two varieties, abbreviations and abstract symbols. These are usually handwritten on the paper containing the text. Symbols are interleaved in the text, while abbreviations may be placed in a margin with an arrow pointing to the ...

  8. X bar - Wikipedia

    en.wikipedia.org/wiki/X_bar

    X bar, x̄ (or X̄) or X-bar may refer to: X-bar theory, a component of linguistic theory. Arithmetic mean, a commonly used type of average. An X-bar, a rollover protection structure. Roman numeral 10,000 in vinculum form.

  9. Long s - Wikipedia

    en.wikipedia.org/wiki/Long_s

    In typography, the long s is known as a type of swash letter, commonly referred to as a "swash s ". [2] The long s is the basis of the first half of the grapheme of the German alphabet ligature letter ß , [3] ( eszett or scharfes s, 'sharp s '). As with other letters, the long s may have a variant appearance depending on typeface: ſ, ſ, ſ, ſ .