Polyaenus of Lampsacus

Polyaenus of Lampsacus ( /ˌpɒliːˈiːnəs/; Greek: Πoλύαινoς Λαμψακηνός, Poluainos Lampsakēnos; c. 340 BCE – c. 285 BCE), also spelled Polyenus, was an ancient Greek mathematician and a friend of Epicurus.