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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. History of ancient numeral systems - Wikipedia

    en.wikipedia.org/wiki/History_of_ancient_numeral...

    Number systems have progressed from the use of fingers and tally marks, perhaps more than 40,000 years ago, to the use of sets of glyphs able to represent any conceivable number efficiently. The earliest known unambiguous notations for numbers emerged in Mesopotamia about 5000 or 6000 years ago.

  4. List of numeral systems - Wikipedia

    en.wikipedia.org/wiki/List_of_numeral_systems

    This is the minimum number of characters needed to encode a 32 bit number into 5 printable characters in a process similar to MIME-64 encoding, since 85 5 is only slightly bigger than 2 32. Such method is 6.7% more efficient than MIME-64 which encodes a 24 bit number into 4 printable characters. 89

  5. Calendar date - Wikipedia

    en.wikipedia.org/wiki/Calendar_date

    9/xi/06, 9.xi.06, 9-xi.06, 9/xi-06, 9.XI.2006, 9. XI. 2006 or 9 XI 2006 (using the Roman numeral for the month) – In the past, this was a common and typical way of distinguishing day from month and was widely used in many countries, but recently this practice has been affected by the general retreat from the use of Roman numerals.

  6. Ancient Roman units of measurement - Wikipedia

    en.wikipedia.org/wiki/Ancient_Roman_units_of...

    In the Julian calendar, an ordinary year is 365 days long, and a leap year is 366 days long. Between 45 BC and AD 1, leap years occurred at irregular intervals. Starting in AD 4, leap years occurred regularly every four years. Year numbers were rarely used; rather, the year was specified by naming the Roman consuls for that year. (As consuls ...

  7. List of date formats by country - Wikipedia

    en.wikipedia.org/wiki/List_of_date_formats_by...

    The year is written in Arabic numerals. The name of the month can be written out in full or abbreviated, or it can be indicated by Roman numerals or Arabic numerals. The day is written in Arabic numerals. [72] [73] [74] MSZ ISO 8601:2003 Iceland: No: Yes: No (dd.mm.yyyy) [75] [76] IST EN 28601:1992 India: Yes: Yes: Sometimes

  8. Chronogram - Wikipedia

    en.wikipedia.org/wiki/Chronogram

    A number of Hebrew poems were produced in the first half of the 19th century, in which the letters of each verse have the same numerical value, being generally the year in which it was written. A New-year's poem in this style, written in the year 579 (=1819), is found in Shalom Cohen's "Ketab Yosher" (ed. Warsaw , p. 146).

  9. Wikipedia:Manual of Style/Dates and numbers - Wikipedia

    en.wikipedia.org/.../Dates_and_numbers

    Roman numerals are not normally used for dates. Two thousand one: 2001: Years and days of the month are not normally written in words. the first of May May the first: 1 May or May 1: June 0622: June 622: Do not zero-pad years. June 2,015: June 2015: Do not add a comma to a four-digit year. sold in the year 1995: sold in 1995