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The direction of numerals follows the writing system's direction. Writing is from left to right in Greek, Coptic, Ethiopic, Gothic, Armenian, Georgian, Glagolitic, and Cyrillic alphabetic numerals along with Shirakatsi's notation. Right-to-left writing is found in Hebrew and Syriac alphabetic numerals, Arabic abjad numerals, and Fez numerals.
"A base is a natural number B whose powers (B multiplied by itself some number of times) are specially designated within a numerical system." [1]: 38 The term is not equivalent to radix, as it applies to all numerical notation systems (not just positional ones with a radix) and most systems of spoken numbers. [1]
The California Job Case was a compartmentalized box for printing in the 19th century, sizes corresponding to the commonality of letters. The frequency of letters in text has been studied for use in cryptanalysis, and frequency analysis in particular, dating back to the Arab mathematician al-Kindi (c. AD 801–873 ), who formally developed the method (the ciphers breakable by this technique go ...
E. Egyptian numerals; Elias delta coding; Elias gamma coding; Elias omega coding; Engineering notation; Excess-3; Excess-3 Gray code; Excess-6; Excess-11; Excess-15
A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.
The Phoenician numeral system consisted of separate symbols for 1, 10, 20, and 100. The sign for 1 was a simple vertical stroke (𐤖). Other numerals up to 9 were formed by adding the appropriate number of such strokes, arranged in groups of three. The symbol for 10 was a horizontal line or tack (𐤗 ). The sign for 20 (𐤘) could come in ...
Roman numerals: The numeral system of ancient Rome, still occasionally used today, mostly in situations that do not require arithmetic operations. Tally marks: Usually used for counting things that increase by small amounts and do not change very quickly. Fractions: A representation of a non-integer as a ratio of two integers.
Alphabetical order is a system whereby character strings are placed in order based on the position of the characters in the conventional ordering of an alphabet. It is one of the methods of collation .