EntityQ65214· pop 21· linked from 20 articlesAxel HarnackSign in to saveBaltic German mathematician (1851–1888)ConnectionsHarnack's inequalityEntityDresdenEntityLeipzigEntitytheologyEntityRussian EmpireCountryTartuEntitymathematicianEntityDarmstadtEntityErlangenEntityInternet ArchiveEntityFelix KleinEntityUniversity of TartuEntitysanatoriumEntityMax Planck SocietyEntityAdolf von HarnackEntityharmonic functionEntityalgebraic curveEntityplane curveEntityOld Style and New Style datesEntitypotential theoryEntityCategories1851 births1888 deaths19th-century German mathematiciansAcademic staff of Leipzig UniversityAcademic staff of Technische Universität DarmstadtBaltic-German people from the Russian EmpireEmigrants from the Russian Empire to GermanyMathematicians from the Russian EmpirePeople from Kreis DorpatScientists from TartuUniversity of Erlangen–Nuremberg alumni