Astronomer and mathematician from the school of Posidonius. Almost nothing is known about his life. The height of his creativity was around 70 BC. It is generally accepted that he lived in Rhodes. The only fully extant treatise by G. is the ‘Introduction to Astronomy’ (Εἰσαγωγὴ εἰς τὰ φαινόμενα). It is in the tradition of Eudoxus and Aratus . Similarly to the later writing by Cleomedes, it is an elementary textbook on as…
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Folkerts, Menso (Munich) and
Albiani, Maria Grazia (Bologna),
Brill’s New Pauly, Antiquity volumes edited by: Hubert Cancik and , Helmuth Schneider, English Edition by: Christine F. Salazar, Classical Tradition volumes edited by: Manfred Landfester, English Edition by: Francis G. Gentry.
Consulted online on 23 January 2020 <http://dx.doi.org/10.1163/1574-9347_bnp_e421260>