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Greek numerals, also known as Ionic, Ionian, Milesian, or Alexandrian numerals, is a system of writing numbers using the letters of the Greek alphabet. In modern Greece , they are still used for ordinal numbers and in contexts similar to those in which Roman numerals are still used in the Western world .
The Attic numerals are a symbolic number notation used by the ancient Greeks. They were also known as Herodianic numerals because they were first described in a 2nd-century manuscript by Herodian ; or as acrophonic numerals (from acrophony ) because the basic symbols derive from the first letters of the (ancient) Greek words that the symbols ...
A form of unary notation called Church encoding is used to represent numbers within lambda calculus. Some email spam filters tag messages with a number of asterisks in an e-mail header such as X-Spam-Bar or X-SPAM-LEVEL. The larger the number, the more likely the email is considered spam. 10: Bijective base-10: To avoid zero: 26: Bijective base-26
In Latin and Greek, the ordinal forms are also used for fractions for amounts higher than 2; only the fraction 1 / 2 has special forms. The same suffix may be used with more than one category of number, as for example the orginary numbers secondary and tertiary and the distributive numbers binary and ternary.
Unlike the Greek, the Hebrew alphabet's 22 letters allowed for numerical expression up to 400. The Arabic abjad's 28 consonant signs could represent numbers up to 1000. Ancient Aramaic alphabets had enough letters to reach up to 9000.
It is also the 16th generalized 30-gonal number. [3] 1000 is the Wiener index of cycle length 20, also the sum of labeled boxes arranged as a pyramid with base 1 – 20. [4] [5] [6] [a] 1000 is the element of multiplicity in a toroidal board in the n-Queens problem, [8] with respective indicator of 25 [9] and count of 51. [10] [11]
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Greek numbers may refer to: Greek numerals , the system of representing numbers using letters of the Greek alphabet Greek numbers, the names and symbols for the numbers 0–10 in the list of numbers in various languages