Wenextconsider the possible orbifoldings of with respect to elements of the Monster group M [Tul].
2008, L. J. P. Kilford, Modular Forms: A Classical and Computational Introduction, Imperial College Press, page 106,
Wenote that; this is not just a numerological coincidence, but follows from a branch of mathematics called moonshine theory which arises from string theory and relates the Monster group and modular functions.
2014, Martin Schlichenmaier, Krichever–Novikov Type Algebras: Theory and Applications, Walter de Gruyter, page 340,