Chaim Leib Pekeris (June 15, 1908 – February 24, 1993)[1] was an Israeli-American physicist and mathematician.

[5] Pekeris remained at M.I.T until 1941 when he moved to the Hudson Laboratories of Columbia University to conduct military research.

Pekeris and his wife moved to Israel in 1948,[2] where he joined the Weizmann Institute as head of its department of applied mathematics in 1949.

[3] Teddy Kollek, the mayor of Jerusalem from 1965 to 1993, said in 1990: "I have told you a lot about Chaim Pekeris tonight and there is much more that I could tell, but you will understand that there are reasons that I can’t.

Let me simply say that Chaim Pekeris played a most significant role in the establishment of the State of Israel.