Nu (uppercase Ν, lowercase ν; ni ) is the thirteenth letter of the Greek alphabet, representing the voiced alveolar nasal. In the system of Greek numerals it has a value of 50. It is derived from the Phoenician nun. Its Latin equivalent is N, though the lowercase (\nu) resembles the Roman lowercase v. The name of the letter is written νῦ in Ancient Greek and traditional Modern Greek polytonic orthography, while in Modern Greek it is written νι. Letters that arose from nu include Roman N and Cyrillic script En.

Symbology

The lower-case letter ν is used as a symbol in many academic fields. Uppercase nu is not used, because it appears identical to Latin N. νx where x is the number of the vibration (a label).

Unicode

Encodings of Greek Nu and Coptic Ni. These characters are used only as mathematical symbols. Stylized Greek text should be encoded using the normal Greek letters, with markup and formatting to indicate text style: