EntityQ288465· pop 30· linked from 872 articlesgroup actionSign in to saveoperation of the elements of a group as transformations or automorphisms (mathematics)ConnectionsLie groupEntityvector spaceEntitygroup theoryEntityquaternionEntitysubgroupEntitynormal subgroupEntitytopological groupEntityorthogonal groupEntitycovering spaceEntitytoposEntityMathieu groupEntitygroup cohomologyEntitytriangleEntityInternational Standard Book NumberEntityintegerEntityfunctionEntityclassical mechanicsEntityreal numberEntitysetEntityaxiomEntityCategoriesGroup actionsGroup theoryRepresentation theory of groupsSymmetry