Sporadic groups

theorem

the largest sporadic finite simple group; the automorphism group of the monster vertex algebra

connection between representation theory of the monster group and the modular j-invariant

five sporadic simple groups

in mathematics, one of the 26 exceptional finite simple groups

closely-packed repeating pattern of points in 24-dimensional Euclidean space

three sporadic simple groups that occur as stabilizers of certain structures on the Leech lattice

Wikimedia list article

one of four sporadic groups discovered or conjectured by Z. Janko

one of three sporadic groups described by Fischer

finite simple group of order 2¹¹·3³·5²·13; the derived subgroup of the Ree group ²F₄(2)