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  2. Greek numerals - Wikipedia

    en.wikipedia.org/wiki/Greek_numerals

    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 .

  3. Greek letters used in mathematics, science, and engineering

    en.wikipedia.org/wiki/Greek_letters_used_in...

    Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities. In these contexts, the capital letters and the small letters represent distinct and unrelated entities.

  4. Greek alphabet - Wikipedia

    en.wikipedia.org/wiki/Greek_alphabet

    Greek symbols are used as symbols in mathematics, physics and other sciences. Many symbols have traditional uses, such as lower case epsilon (ε) for an arbitrarily small positive number , lower case pi (π) for the ratio of the circumference of a circle to its diameter , capital sigma (Σ) for summation , and lower case sigma (σ) for standard ...

  5. Alphabetic numeral system - Wikipedia

    en.wikipedia.org/wiki/Alphabetic_numeral_system

    Greek numerals in a c. 1100 Byzantine manuscript of Hero of Alexandria's Metrika. The first line contains the number "͵θϡϟϛ δ´ ϛ´", i.e. "9996 + 1 ⁄ 4 + 1 ⁄ 6". It features unit fractions and each of the special numeral symbols sampi (ϡ), koppa (ϟ), and stigma (ϛ) in their minuscule forms. Unit fractions were a method to express ...

  6. Koppa (letter) - Wikipedia

    en.wikipedia.org/wiki/Koppa_(letter)

    Koppa or qoppa (Ϙ, ϙ; as a modern numeral sign: ϟ) is a letter that was used in early forms of the Greek alphabet, derived from Phoenician qoph (𐤒).It was originally used to denote the /k/ sound, but dropped out of use as an alphabetic character and replaced by Kappa (Κ).

  7. Greek numbers - Wikipedia

    en.wikipedia.org/wiki/Greek_numbers

    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

  8. Delta (letter) - Wikipedia

    en.wikipedia.org/wiki/Delta_(letter)

    Delta (/ ˈ d ɛ l t ə / DEL-tə; [1] uppercase Δ, lowercase δ; Greek: δέλτα, délta, ) [2] is the fourth letter of the Greek alphabet. In the system of Greek numerals, it has a value of four. It was derived from the Phoenician letter dalet 𐤃. [3] Letters that come from delta include the Latin D and the Cyrillic Д.

  9. Stigma (ligature) - Wikipedia

    en.wikipedia.org/wiki/Stigma_(ligature)

    The numeral symbol, originally quite unrelated to the στ ligature, developed from the letter Ϝ, which stood for the sound /w/ in early pre-classical forms of the Greek alphabet. This symbol became obsolete as a letter during the classical era but remained part of the Greek alphabet-based system of numerals, where its value of 6 corresponded ...