EntityQ765994· pop 8· linked from 26 articlesgroup objectSign in to saveanalogue of the definition of a group inside an arbitrary categoryConnectionscontinuous functionEntityinitial and terminal objectsEntitymathematicsEntityInternational Standard Book NumberEntityset theoryEntitytopologyEntitysetEntitygroupEntityalgebraic geometryEntitytopological spaceEntityabelian groupEntitymanifoldEntityalgebraic topologyEntitycategory theoryEntitymonoidEntityLie groupEntitycategoryEntityalgebraic varietyEntityuniversal algebraEntitysingletonEntityCategoriesGroup theoryObjects (category theory)