EntityQ1134435· pop 13· linked from 173 articlesautomorphic formSign in to savegeneralization of periodic functions to have group domainsConnectionsLanglands programEntityadelic algebraic groupEntitySL2(R)EntitymathematicsEntityInternational Standard Book NumberEntitycomplex numberEntityHenri PoincaréEntitynumber theoryEntitySrinivasa RamanujanEntitygroupEntityvector spaceEntitytrigonometric functionEntityabstract algebraEntityEuclidean spaceEntityalgebraic geometryEntityalgebraic numberEntityfunctional analysisEntityperiodic functionEntityabelian groupEntityRiemann zeta functionEntityCategoriesAutomorphic formsLie groups