EntityQ6358325· pop 6· linked from 33 articlesN-connectedSign in to saveConnectionsconnected spaceEntitysimply connected spaceEntityballEntityhomotopyEntityhomotopy groupEntityInternational Standard Book NumberEntitysphereEntitydigital object identifierEntityInternational Standard Serial NumberEntitytunnelEntitycurveEntitycontinuous functionEntityisomorphismEntitytopological spaceEntityQ118398EntityoctahedronEntityCambridge University PressEntityalgebraic topologyEntityisolated pointEntitymappingEntityCategoriesGeneral topologyHomotopy theoryProperties of topological spaces