Shelby Hansen

The set of matrices of the form

(1)
\begin{align} \left[\begin{array}{ccc}1 & a & b \\0 & 1 & c \\0 & 0 & 1\end{array}\right] \end{align}

with real entries under matrix multiplication. Further down there is a subgroup with 1 set of cosets.

page revision: 18, last edited: 20 Nov 2009 05:21