Complex sentence: Avraham Trahtman (b.1944, Ph.D. (1973) and former degree (1967) at Ural University, Sverdlovsk) is a mathematician at Bar-Ilan University (Israel).
Split into simpler sentences: Avraham Trahtman (b.1944, Ph.D. (1973) and former degree (1967) at Ural University, Sverdlovsk). Professor Trahtman is a mathematician at Bar-Ilan University (Israel).