EntityQ3828581· pop 5· linked from 78 articlesΔ-hyperbolic spaceSign in to saveConcept in mathematicsConnectionshyperbolic groupEntityhyperbolic geometryEntityInternational Standard Book NumberEntityreal numberEntitytopologyEntitydigital object identifierEntitygroupEntityplaneEntitytorusEntitymetric spaceEntityunit circleEntityQ118398Entitynumber lineEntityhomeomorphismEntityif and only ifEntitygeodesic curveEntityMikhail GromovEntitytreeEntityhomothetic transformationEntitycompact spaceEntityCategoriesHyperbolic geometryHyperbolic metric spaceMetric geometry