Hindu–Arabic numeral system system is based upon 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 Brahmi numerals and have split into various typographical variants since the Middle Ages. These symbol sets can be divided into three main families: Western Arabic numerals used in the Greater Maghreb and in Europe, Eastern Arabic numerals (also called "Indic numerals") used in the Middle East, and the Indian numerals used in South Asia. The Hindu-Arabic numerals were invented by mathematicians in India. Perso-Arabic mathematicians called them
Kaktovik Inupiaq numerals Kaktovik Inupiaq numerals Inuit languages, like other Eskimo–Aleut languages (and Celtic and Mayan languages as well), use a vigesimal counting system. Inuit counting has sub-bases at 5, 10, and 15. Arabic numerals, consisting of 10 distinct digits (0-9) are not adequate to represent a base-20 system. Students from Kaktovik, Alaska, came up with the "Kaktovik Inupiaq numerals", which has since gained wide use among Alaskan Iñupiat, and has been considered in other countries where dialects of the Inuit language are spoken. The numeral system has helped to revive counting in Inuit languages, which had been falling into disuse among Inuit