Proper noun
Monster group
(algebra) The largest sporadic group, of order 2 · 3 · 5 · 7 · 11 · 13 · 17 · 19 · 23 · 29 · 31 · 41 · 47 · 59 · 71 (approximately 8 · 10), denoted M or F1.
monster group
Alternative letter-case form of Monster group
... I have said for twenty-five or thirty years that the one thing I would really like to know before I die is why the monster group exists. John Horton Conway
Moonshine The Monster group is one of two principal constituents in the Monstrous moonshine conjecture by Conway and Norton, which relates discrete and non-discrete mathematics and was finally proved by Richard Borcherds in 1992. Source: Internet