EntityQ1834342· pop 13· linked from 246 articlesmodular groupSign in to saveorientation-preserving mapping class group of the torusConnectionsgroup actionEntityelliptic curveEntityLie groupEntityelliptic functionEntitytopological groupEntityorthogonal groupEntityMinkowski's question mark functionEntitymathematicsEntityInternational Standard Book NumberEntitycomplex numberEntityprime numberEntityintegerEntityreal numberEntitydigital object identifierEntitymatrixEntityJoseph-Louis LagrangeEntityInternational Standard Serial NumberEntityNiels Henrik AbelEntityirrational numberEntitygroupEntityCategoriesAnalytic number theoryGroup theoryModular forms