Complex sentence: He was a student at Centrale Paris and holds a DEA (Master of Advanced Studies) in theoretical physics, as well as a Ph.D. in philosophy of science and an accreditation to supervise research (HDR).
Split into simpler sentences: He was a student at Centrale Paris and holds a DEA (Master of Advanced Studies) in theoretical physics. He later received a Ph.D. in philosophy of science and an accreditation to supervise research (HDR).