Eudemus, who had come from India as an ally of Eumenes and was responsible for the recruitment of Eumenes' elephants and light infantry was also executed, as was the leader of the Argyraspides, Antigenes.
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Taken by surprise a great part of Eumenes' heavy cavalry under Eudemus routed, despite Eumenes' heroic efforts to counterattack.
In addition Eudemus attributed to him the discovery that a circle is bisected by its diameter, that the base angles of an isosceles triangle are equal and that vertical angles are equal.
Philosophers and astronomers treated by Eudemus include Thales, Anaximander, Anaximenes, Oenopides, Eudoxus, and others.
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Ivor Bulmer-Thomas, 'Eudemus of Rhodes', in: Dictionary of Scientific Biography, Charles Coulston Gillispie, ed.