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  2. History of ancient numeral systems - Wikipedia

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

    In the Etruscan system, the symbol 1 was a single vertical mark, the symbol 10 was two perpendicularly crossed tally marks, and the symbol 100 was three crossed tally marks (similar in form to a modern asterisk *); while 5 (an inverted V shape) and 50 (an inverted V split by a single vertical mark) were perhaps derived from the lower halves of ...

  3. Roman numerals - Wikipedia

    en.wikipedia.org/wiki/Roman_numerals

    The Roman numerals, in particular, are directly derived from the Etruscan number symbols: šŒ  , šŒ” , šŒ¢ , šŒ£ , and šŒŸ 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 ...

  4. 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 ...

  5. Ab urbe condita - Wikipedia

    en.wikipedia.org/wiki/Ab_urbe_condita

    In reality, the dominant method of identifying years in Roman times was to name the two consuls who held office that year. [3] In late antiquity, regnal years were also in use, as in Roman Egypt during the Diocletian era after AD 293 , and in the Byzantine Empire from AD 537, following a decree by Justinian .

  6. Latin numerals - Wikipedia

    en.wikipedia.org/wiki/Latin_Numerals

    'disinherited by her 80-year-old father' Some of these words have a specialised meaning. The sēnārius was a kind of metre consisting of six iambic feet commonly used in spoken dialogue in Roman comedy. There were also metres called the septēnārius and octōnārius (see Metres of Roman comedy).

  7. Attic numerals - Wikipedia

    en.wikipedia.org/wiki/Attic_numerals

    The ancient Greek inscription translates as “The Governor erected this orphanage in the year 1828”. ... The symbols representing 50, 500, 5000, ... Roman numeral ...

  8. Old Roman Symbol - Wikipedia

    en.wikipedia.org/wiki/Old_Roman_Symbol

    The Old Roman Symbol (Latin: vetus symbolum romanum), or Old Roman Creed, is an earlier and shorter version of the Apostles’ Creed. [1] It was based on the 2nd-century Rule of Faith and the interrogatory declaration of faith for those receiving Baptism (3rd century or earlier), [1] which by the 4th century was everywhere tripartite in structure, following Matthew 28:19 ("baptizing them in ...

  9. History of mathematical notation - Wikipedia

    en.wikipedia.org/wiki/History_of_mathematical...

    He represented mathematical symbols using characters from the Arabic alphabet. [44] Early use of the plus and minus signs in print, by Widmann (1489) The 14th century saw the development of new mathematical concepts to investigate a wide range of problems. [46] The two most widely used arithmetic symbols are addition and subtraction, + and −.