unitary group

Noun

 * 1)  For given n, the  of n×n unitary matrices, with the group operation of.

Usage notes
The unitary group of degree n is a subgroup of the general linear group GL(n, C) (i.e., the underlying field is that of the complex numbers) and can be denoted U(n) or Un.

Translations

 * Finnish: unitaarinen ryhmä
 * German: unitäre Gruppe