unitary group

Noun

unitary group (plural unitary groups)

1. For given n, the group of n×n unitary matrices, with the group operation of matrix multiplication.
   • The symmetric group is closely related to the unitary group.[…]The latest developments in spin free quantum chemistry have been the use of the unitary group for the calculation of the matrix elements of the Hamiltonian in the configuration interaction treatment.1995, Ruben Pauncz, The Symmetric Group in Quantum Chemistry, CRC Press, page 195
   • Two of the most important types of groups that occur in physics are unitary groups and orthogonal groups.2004, [1999], Shoon K. Kim, Group Theoretical Methods and Applications to Molecules and Crystals, Cambridge University Press, page 53

   Synonyms:

   hyperorthogonal group