ϖ

Symbol

 * 1)  The lemniscate constant, a  constant representing the ratio of the perimeter of Bernoulli's lemniscate to its diameter; approximately 2.62205755.
 * 2)  diameter of a model κ-plane:
 * $$\varpi^\kappa$$
 * 1)  uniformizer of a localisation of a number ring at a regular prime ideal:
 * 2)  perihelion, etc.:
 * $$\varpi$$
 * 1)  angular frequency of a wave
 * 1)  angular frequency of a wave

Usage notes

 * This is a glyph variant of lower-case pi.

Letter

 * 1) Rare variant of the lower case letter pi (πι), the 16th letter of the modern Greek alphabet.