EntityQ86416· pop 6· linked from 7 articlesHellmuth StachelSign in to saveAustrian mathematicianConnectionscomputer-aided designEntityTU WienEntityChinaCountryAustriaCountrymathematicsEntityphilosophyEntityastronomyEntityShanghaiCitygeometryEntityGuangzhouCityInternational Standard Book NumberEntityGrazEntitymathematicianEntityStyriaEntitykinematicsEntityLeobenEntitynon-Euclidean geometryEntitydoctorateEntityUniversity of GrazEntityhyperbolic geometryEntityCategories1942 births20th-century Austrian mathematicians21st-century Austrian mathematiciansAcademic staff of TU WienLiving peopleScientists from Graz