What is "dionysodorus"

Dionysodorus of Caunus (c. 250 BC – c. 190 BC) was an ancient Greek mathematician.

Dionysodorus ( Greek: Διονυσόδωρος, Dionusódōros, c. 430 – late 5th century or early 4th century BCE) was an ancient Greek sophistic philosopher and teacher of martial arts, generalship, and oration. Closely associated with his brother and fellow sophist Euthydemus, he is depicted in the writing of Plato and Xenophon.