Janko Groups

The Sporadic Groups $J_1$, $J_2$, $J_3$ and $J_4$. The Janko group $J_2$ is also known as the Hall-Janko Group.

See also Sporadic Group

References

Wilson, R. A. ``ATLAS of Finite Group Representation.'' http://for.mat.bham.ac.uk/atlas/html/contents.html#spo.