Heisenberg group

English

Etymology

Named after Template:W.

Proper noun

1. Template:Lb The group of 3×3 upper triangular matrices of the form $\left(\begin{array}{ccc}1& a& c\\ 0& 1& b\\ 0& 0& 1\end{array}\right)$ under the operation of matrix multiplication, arising in the description of one-dimensional quantum-mechanical systems.