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The Hindu-Arabic numeral system is a positional decimal numeral system first documented in the ninth century. The system is based on ten, originally nine, different glyphs. The symbols (glyphs) used to represent the system are in principle independent of the system itself. The glyphs in actual use are descended from Indian Brahmi numerals, and have split into various typographical variants since the Middle Ages. These symbol sets can be divided into three main families: the West Arabic numerals used in the Maghreb and in Europe, the Eastern Arabic numerals used in Egypt and the Middle East, and the Indian numerals used in India.

The symbols used to represent the system have split into various typographical variants since the Middle Ages:

- the widespread Western "Arabic numerals" used with the Latin alphabet, in the table below labelled "European", descended from the "West Arabic numerals" which were developed in al-Andalus and the Maghreb (There are two typographic styles for rendering European numerals, known as lining figures and text figures).
- the "Arabic-Indic" or "Eastern Arabic numerals" used with the Arabic alphabet, developed primarily in what is now Iraq. A variant of the Eastern Arabic numerals used in Persian and Urdu.
- the "Devanagari numerals" used with Devanagari and related variants grouped as Indian numerals.

As in many numbering systems, the numbers 1, 2, and 3 represent simple tally marks. 1 being a single line, 2 being two lines (now connected by a diagonal) and 3 being three lines (now connected by two vertical lines). After three, numbers tend to become more complex symbols (examples are the Chinese/Japanese numbers and Roman numerals). Theorists believe that this is because it becomes difficult to instantaneously count objects past three.

Western Arabic | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
---|---|---|---|---|---|---|---|---|---|---|

Middle East Arabic | ٠ | ١ | ٢ | ٣ | ٤ | ٥ | ٦ | ٧ | ٨ | ٩ |

Eastern Arabic | ۰ | ۱ | ۲ | ۳ | ۴ | ۵ | ۶ | ۷ | ۸ | ۹ |

Devanagari | ० | १ | २ | ३ | ४ | ५ | ६ | ७ | ८ | ९ |

Gujarati | ૦ | ૧ | ૨ | ૩ | ૪ | ૫ | ૬ | ૭ | ૮ | ૯ |

Gurmukhi | ੦ | ੧ | ੨ | ੩ | ੪ | ੫ | ੬ | ੭ | ੮ | ੯ |

Limbu | ᥆ | ᥇ | ᥈ | ᥉ | ᥊ | ᥋ | ᥌ | ᥍ | ᥎ | ᥏ |

Assamese & Bengali | ০ | ১ | ২ | ৩ | ৪ | ৫ | ৬ | ৭ | ৮ | ৯ |

Oriya | ୦ | ୧ | ୨ | ୩ | ୪ | ୫ | ୬ | ୭ | ୮ | ୯ |

Telugu | ౦ | ౧ | ౨ | ౩ | ౪ | ౫ | ౬ | ౭ | ౮ | ౯ |

Kannada | ೦ | ೧ | ೨ | ೩ | ೪ | ೫ | ೬ | ೭ | ೮ | ೯ |

Malayalam | ൦ | ൧ | ൨ | ൩ | ൪ | ൫ | ൬ | ൭ | ൮ | ൯ |

Tamil (Grantha) | ೦ | ௧ | ௨ | ௩ | ௪ | ௫ | ௬ | ௭ | ௮ | ௯ |

Tibetan | ༠ | ༡ | ༢ | ༣ | ༤ | ༥ | ༦ | ༧ | ༨ | ༩ |

Burmese | ၀ | ၁ | ၂ | ၃ | ၄ | ၅ | ၆ | ၇ | ၈ | ၉ |

Thai | ๐ | ๑ | ๒ | ๓ | ๔ | ๕ | ๖ | ๗ | ๘ | ๙ |

Khmer | ០ | ១ | ២ | ៣ | ៤ | ៥ | ៦ | ៧ | ៨ | ៩ |

Lao | ໐ | ໑ | ໒ | ໓ | ໔ | ໕ | ໖ | ໗ | ໘ | ໙ |

Lepcha | ᱀ | ᱁ | ᱂ | ᱃ | ᱄ | ᱅ | ᱆ | ᱇ | ᱈ | ᱉ |

Balinese | ᭐ | ᭑ | ᭒ | ᭓ | ᭔ | ᭕ | ᭖ | ᭗ | ᭘ | ᭙ |

Sundanese | ᮰ | ᮱ | ᮲ | ᮳ | ᮴ | ᮵ | ᮶ | ᮷ | ᮸ | ᮹ |

Ol Chiki | ᱐ | ᱑ | ᱒ | ᱓ | ᱔ | ᱕ | ᱖ | ᱗ | ᱘ | ᱙ |

Osmanya | 𐒠 | 𐒡 | 𐒢 | 𐒣 | 𐒤 | 𐒥 | 𐒦 | 𐒧 | 𐒨 | 𐒩 |

At present the following sets are being used:Hindu-Arabic numerals These are the most widely-used symbols, used in western parts of the Arab world, west of Egypt, in European and Western countries and worldwide. They are known as Arabic numerals, Western numerals, European numerals or digits , Western Arabic numerals, Arabic Western numerals. In Arabic they are called "Western Numerals". (0, 1, 2, 3, 4, 5, 6, 7, 8, 9)Devanagari numerals These symbols are used in languages that use the Devanagari script. (०, १, २, ३, ४, ५, ६, ७, ८, ९) They are sometimes called late Devanagari numerals to distinguish them from the early Devanagari numerals.Eastern Arabic numerals In English they are also called Eastern Arabic numerals, Arabic-Indic numerals, Arabic Eastern Numerals. In Arabic though, they are called "Indian numerals", أرقام هندية, arqam hindiyyah. They are sometimes called Indic Numerals in English , however, this nomenclature is sometimes discouraged as it "leads to confusion with the digits currently used with the scripts of India" They are used in Egypt and Arabic countries east of it, and were also in the no longer used Ottoman Turkish script (٠.١.٢.٣.٤.٥.٦.٧.٨٩)

A variant of the Eastern Arabic numerals is used in Persian and Urdu* languages. (۰، ۱، ۲، ۳، ۴، ۵، ۶، ۷، ۸، ۹)

- For Urdu and other languages used by Muslims in India and Pakistan there is used the following Hindu-Arabic numeral system:

Gurmukhi numerals Used in the Punjabi language. (੦, ੧, ੨, ੩, ੪, ੫, ੬, ੭, ੮, ੯)Bengali numerals Used in the Bengali and Assamese languages (০, ১, ২, ৩, ৪, ৫, ৬, ৭, ৮, ৯)Oriya numerals Used in the Oriya language (୦, ୧, ୨, ୩, ୪, ୫, ୬, ୭, ୮, ୯)Tamil numerals Used in the Tamil language (௦, ௧, ௨, ௩, ௪, ௫, ௬, ௭, ௮, ௯)Kannada numerals Used in the Kannada language (೦, ೧, ೨, ೩, ೪, ೫, ೬, ೭, ೮, ೯)Malayalam numerals Used in the Malayalam language (൦, ൧, ൨, ൩, ൪, ൫, ൬, ൭, ൮, ൯)Thai numerals Used in the Thai language (๐, ๑, ๒, ๓, ๔, ๕, ๖, ๗, ๘, ๙)Tibetan numerals Used in the Tibetan language (༠, ༡, ༢, ༣, ༤, ༥, ༦, ༧, ༨, ༩)Burmese numerals Used in the Burmese language (၀, ၁, ၂, ၃, ၄, ၅, ၆, ၇, ၈, ၉)Eastern Cham numerals Used in Vietnam Western Cham numerals Used in Cambodia Khmer numerals Used in Cambodia (០, ១, ២, ៣, ៤, ៥, ៦, ៧, ៨, ៩)Javanese numerals Used in Java since the time of Pallavas. Lepcha numerals Used in Sikkim and Bhutan Lao numerals Used in Lao language (໐, ໑, ໒, ໓, ໔, ໕, ໖, ໗, ໘, ໙)

The Hindu-Arabic numeral system originated in India. Graham Flegg (2002) dates the history of the Hindu-Arabic system to the Indus valley civilization. The inscriptions on the edicts of Ashoka (1st millennium BCE) display this number system being used by the Imperial Mauryas. This system was later transmitted to Europe by the Arabs.

Buddhist inscriptions from around 300 BC use the symbols which became 1, 4 and 6. One century later, their use of the symbols which became 2, 4, 6, 7 and 9 was recorded. These Brahmi numerals are the ancestors of the Hindu-Arabic glyphs 1 to 9, but they were not used as a positional system with a zero, and there were rather separate numerals for each of the tens (10, 20, 30, etc.).

Positional notation without the use of zero (using an empty space in tabular arrangements, or the word kha "emptiness") is known to have been in use in India from the 6th century. The oldest known authentic document that may be argued to contain the use of zero and decimal notation is the Jaina cosmological text Lokavibhaga, which was completed on August 25, 458.

The first inscription showing the use of zero which is dated and is not disputed by any historian is the inscription at Gwalior dated 933 in the Vikrama calendar (876 CE.)

This 9th century date is currently thought to be the first physical evidence for the use of positional zero in India. According to Lam Lay Yong,

- "the earliest appearance in India of a symbol for zero in the Hindu-Arabic numeral system is found in an inscription at Gwalior which is dated 876 AD".

- "The first record of the Indian use of zero which is dated and agreed by all to be genuine was written in 876" on the Gwalior tablet stone

According to Menninger (p. 400):

- "This long journey begins with the Indian inscription which contains the earliest true zero known thus far (Fig. 226). This famous text, inscribed on the wall of a small temple in the vicinity of Gvalior (near Lashkar in Central India) first gives the date 933 (A.D. 870 in our reckoning) in words and in Brahmi numerals. Then it goes on to list four gifts to a temple, including a tract of land "270 royal hastas long and 187 wide, for a flower-garden." Here, in the number 270 the zero first appears as a small circle [...]; in the twentieth line of the inscription it appears once more in the expression "50 wreaths of flowers" which the gardeners promise to give in perpetuity to honor the divinity."

- ... a person from India presented himself before the Caliph al-Mansur in the year 776 who was well versed in the siddhanta method of calculation related to the movement of the heavenly bodies, and having ways of calculating equations based on the half-chord [essentially the sine] calculated in half-degrees ... Al-Mansur ordered this book to be translated into Arabic, and a work to be written, based on the translation, to give the Arabs a solid base for calculating the movements of the planets ...

This book presented by the Indian scholar was probably Brahmasphuta Siddhanta (The Opening of the Universe) which was written in 628 (Ifrah) by the Indian mathematician Brahmagupta.

The numeral system came to be known to both the Persian mathematician Al-Khwarizmi, whose book On the Calculation with Hindu Numerals written about 825, and the Arab mathematician Al-Kindi, who wrote four volumes, On the Use of the Indian Numerals (كتاب في استعمال العداد الهندي [kitab fi isti'mal al-'adad al-hindi]) about 830, are principally responsible for the diffusion of the Indian system of numeration in the Middle-East and the West

The use of zero in positional systems dates to about this time, representing the final step to the system of numerals we are familiar with today.

The first dated and undisputed inscription showing the use of zero at is at Gwalior, dating to 876 AD. There were, however, Indian precursors from about 500 AD, positional notations without a zero, or with the word kha indicating the absence of a digit. It is, therefore, uncertain whether the crucial inclusion of zero as the tenth symbol of the system should be attributed to the Indians, or if it is due to Al-Khwarizmi or Al-Kindi of the House of Wisdom.

In the 10th century, Arab mathematicians extended the decimal numeral system to include fractions, as recorded in a treatise by Syrian mathematician Abu'l-Hasan al-Uqlidisi in 952-953.

In the Arab World—until modern times—the Hindu-Arabic numeral system was used only by mathematicians. Muslim scientists used the Babylonian numeral system, and merchants used the Abjad numerals, a system similar to the Greek numeral system and the Hebrew numeral system. Therefore, it was not until Fibonacci that the Hindu-Arabic numeral system was used by a large population.

Even though, in Chinese numerals a circle (〇) is used to write zero in Suzhou numerals. Many historians think it was imported from Indian numerals by Gautama Siddha in 718, but some think it was created from the Chinese text space filler "□".

Chinese and Japanese finally adopted the Western Arabic numerals in the 19th century, abandoning counting rods.

- Flegg, Graham (2002). Numbers: Their History and Meaning. Courier Dover Publications. ISBN 0486421651.

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Last updated on Thursday October 02, 2008 at 16:32:33 PDT (GMT -0700)

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Last updated on Thursday October 02, 2008 at 16:32:33 PDT (GMT -0700)

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