Alternating Group
Even Permutation Groups 
which are Normal Subgroups of thePermutation Group of Order 
. They are Finite analogs of the families ofsimple Lie Groups. The lowest order alternating group is 60. Alternating groups with 
arenon-Abelian Simple Groups. The number of conjugacy classes in thealternating groups for 
, 3, ... are 1, 3, 4, 5, 7, 9, ... (Sloane's A000702).
References
Sloane, N. J. A. SequenceA000702/M2307in ``An On-Line Version of the Encyclopedia of Integer Sequences.''http://www.research.att.com/~njas/sequences/eisonline.html and Sloane, N. J. A. and Plouffe, S.The Encyclopedia of Integer Sequences. San Diego: Academic Press, 1995. Wilson, R. A. ``ATLAS of Finite Group Representation.''http://for.mat.bham.ac.uk/atlas/html/contents.html#alt.
- Isogonal Line
- Isogonic Centers
- Isograph
- Isohedral Tiling
- Isohedron
- Isolated Point
- Isolated Singularity
- Isolating Integral
- Isometric Latitude
- Isometry
- Isomorphic Graphs
- Isomorphic Groups
- Isomorphic Posets
- Isomorphism
- Isoperimetric Inequality
- Isoperimetric Point
- Isoperimetric Problem
- Isoperimetric Quotient
- Isoperimetric Theorem
- Isopleth
- Isoptic Curve
- Isosceles Tetrahedron
- Isosceles Triangle
- Isoscelizer
- Isospectral Manifolds