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  2. Eastern Arabic numerals - Wikipedia

    en.wikipedia.org/wiki/Eastern_Arabic_numerals

    v. t. e. The Eastern Arabic numerals, also called Indo-Arabic numerals, are the symbols used to represent numerical digits in conjunction with the Arabic alphabet in the countries of the Mashriq (the east of the Arab world), the Arabian Peninsula, and its variant in other countries that use the Persian numerals on the Iranian plateau and in Asia.

  3. Arabic numerals - Wikipedia

    en.wikipedia.org/wiki/Arabic_numerals

    The first Arabic numerals in the West appeared in the Codex Albeldensis in Spain. The first mentions of the numerals from 1 to 9 in the West are found in the 976 Codex Vigilanus, an illuminated collection of various historical documents covering a period from antiquity to the 10th century in Hispania. [13]

  4. Hindu–Arabic numeral system - Wikipedia

    en.wikipedia.org/wiki/Hindu–Arabic_numeral_system

    Sometime around 600 CE, a change began in the writing of dates in the Brāhmī-derived scripts of India and Southeast Asia, transforming from an additive system with separate numerals for numbers of different magnitudes to a positional place-value system with a single set of glyphs for 1–9 and a dot for zero, gradually displacing additive expressions of numerals over the following several ...

  5. Pahlavi scripts - Wikipedia

    en.wikipedia.org/wiki/Pahlavi_scripts

    Inscriptional Pahlavi is the name given to a variant of the Pahlavi script as used to render the 3rd–6th-century Middle Persian language inscriptions of the Sasanian emperors and other notables. Genuine Middle Persian, as it appears in these inscriptions, was the Middle Iranian language of Persia proper, the region in the south-western corner ...

  6. Abjad numerals - Wikipedia, the free encyclopedia

    en.wikipedia.org/wiki/Abjad_numerals

    The Abjad numerals are a decimal numeral system in which the 28 letters of the Arabic alphabet are assigned numerical values. From Wikipedia, the free encyclopedia.

  7. Al-Khwarizmi - Wikipedia

    en.wikipedia.org/wiki/Al-Khwarizmi

    Al-Khwarizmi. Muhammad ibn Musa al-Khwarizmi[note 1] (Persian: محمد بن موسى خوارزمی; c. 780 – c. 850), or simply al-Khwarizmi, was a Khwarazm -born polymath who produced vastly influential Arabic-language works in mathematics, astronomy, and geography. Around 820 CE, he was appointed as the astronomer and head of the House of ...

  8. History of the Hindu–Arabic numeral system - Wikipedia

    en.wikipedia.org/wiki/History_of_the_Hindu...

    The Hindu–Arabic numeral system is a decimal place-value numeral system that uses a zero glyph as in "205". [1]Its glyphs are descended from the Indian Brahmi numerals.The full system emerged by the 8th to 9th centuries, and is first described outside India in Al-Khwarizmi's On the Calculation with Hindu Numerals (ca. 825), and second Al-Kindi's four-volume work On the Use of the Indian ...

  9. History of calendars - Wikipedia

    en.wikipedia.org/wiki/History_of_calendars

    The number of phylai, and hence the number of prytanies, varied over time. Until 307 BC, there were 10 phylai. After that the number varies between 11 and 13 (usually 12). Even more confusing, while the conciliar and festival years were about the same length in the 4th century BC, such was not regularly the case earlier or later.