  saharon shelah () is an israeli mathematician. he is a professor of mathematics at the hebrew university of jerusalem and rutgers university in new jersey. ==biography== shelah was born in jerusalem on july 3, 1945. he is the son of the israeli poet and political activist yonatan ratosh.  he received his phd for his work on stable theories in 1969 from the hebrew university. shelah is married to yael, and has three children.  shelah wanted to be a scientist while at primary school, but initially was attracted to physics and biology, not mathematics. later he found [[mathemat
1945_births 20th-century_mathematicians 21st-century_mathematicians Hebrew_University_of_Jerusalem_alumni Hebrew_University_of_Jerusalem_faculty ISI_highly_cited_researchers Israel_Prize_in_mathematics_recipients Israeli_Jews Israeli_mathematicians Jewish_scientists Living_people Members_of_the_Hungarian_Academy_of_Sciences Members_of_the_Israel_Academy_of_Sciences_and_Humanities Model_theorists Rutgers_University_faculty Set_theorists Wolf_Prize_in_Mathematics_laureates