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The 2, 8, and 9 resemble Arabic numerals more than Eastern Arabic numerals or Indian numerals. Leonardo Fibonacci was a Pisan mathematician who had studied in the Pisan trading colony of Bugia , in what is now Algeria , [ 15 ] and he endeavored to promote the numeral system in Europe with his 1202 book Liber Abaci :
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.
The Arabic alphabet, [a] or the Arabic abjad, is the Arabic script as specifically codified for writing the Arabic language. It is a unicameral script written from right-to-left in a cursive style, and includes 28 letters, [ b ] of which most have contextual letterforms.
In "old style" text figures, numerals 0, 1 and 2 are x-height; numerals 6 and 8 have bowls within x-height, plus ascenders; numerals 3, 5, 7 and 9 have descenders from x-height, with 3 resembling ʒ; and the numeral 4 extends a short distance both up and down from x-height. Old-style numerals are often used by British presses.
Those letters that do not have a close phonetic approximation in the Latin script are often expressed using numerals or other characters, so that the numeral graphically approximates the Arabic letter that one would otherwise use (e.g. ع is represented using the numeral 3 because the latter looks like a vertical reflection of the former).
An alphabetic numeral system employs the letters of a script in the specific order of the alphabet in order to express numerals. In Greek, letters are assigned to respective numbers in the following sets: 1 through 9, 10 through 90, 100 through 900, and so on. Decimal places are represented by a single symbol.
The numerals used by Western countries have two forms: lining ("in-line" or "full-height") figures as seen on a typewriter and taught in North America, and old-style figures, in which numerals 0, 1 and 2 are at x-height; numerals 6 and 8 have bowls within x-height, and ascenders; numerals 3, 5, 7 and 9 have descenders from x-height; and the ...
Eastern Arabic numerals (٠,١,٢,٣,٤,٥,٦,٧,٨,٩), symbols used to write decimal in the countries of the Arab east, and in other countries; Numerals (number names) in Arabic language; see Arabic grammar § Numerals; Abjad numerals, a numeral system in which the 28 letters of the Arabic alphabet are assigned numerical values and may be ...