Main Page | See live article | Alphabetical index In mathematics, the Bimonster is a group that is the wreath product of the Monster group M with Z2: The Bimonster is also a quotient of the Coxeter group corresponding to the Coxeter-Dynkin diagram Y555 (a Y-shaped graph with 16 nodes); this conjecture was made by John H. Conway, but remained unproven until 1990, when proof was given by Ivanov and Simon P. Norton. External links MathWorld: Bimonster This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.