Theodor Vahlen was born in 1869.
Theodor Vahlen died in 1945.
Johannes Vahlen was born in 1830.
Theodor Vahlen has written: 'Konstruktionen und approximationen in systematischer darstellung' -- subject(s): Algebra, Geometry, Graphic methods, Trigonometry 'Abstrakte Geometrie' -- subject(s): Foundations, Geometry
Johannes Vahlen died in 1911.
Theodor Haecker was born in 1879.
Theodor Dalenson was born in 1959.
Theodor Axenfeld was born in 1867.
Theodor Thierfelder was born in 1824.
Theodor Wolf was born in 1841.
Theodor Illek was born in 1984.
Theodor Zahn was born in 1838.
Theodor Haubach was born in 1896.