The Point Group of symmetries of the Tetrahedron, denoted . The tetrahedral group has symmetry operations , , , , and (Cotton 1990).
See also Icosahedral Group, Octahedral Group, Point Groups, Tetrahedron
References
Cotton, F. A. Chemical Applications of Group Theory, 3rd ed. New York: Wiley, p. 47, 1990.
Lomont, J. S. ``Icosahedral Group.'' §3.10.C in Applications of Finite Groups.
New York: Dover, p. 81, 1987.