Background
He was born in Ypres, Belgium.
He was born in Ypres, Belgium.
In 1858, he became a teacher in mathematics at the regimental school. He began with studying geometry, particularly Euclid"s fifth postulate and non-Euclidean geometry. He found similar results as Lobachevsky in 1860, but the Russian mathematician was already dead at that time.
Tilly is more known for his work on non-Euclidean mechanics, as he was the one who invented lieutenant
He worked thus alone on this topic until a French mathematician named Jules Hoüel showed interest in that field Tilly also wrote on military science and history of mathematics.
He died in München, Germany.