Israel Halperin

Israel Halperin

Israel Halperin (January 5, 1911 – March 8, 2007) was a Canadian mathematician and social activist.

Born in Toronto, Ontario, the son of Russian immigrants Solomon Halperin and Fanny Lundy, Halperin attended Malvern Collegiate Institute [cite news|title=ISRAEL HALPERIN, SCHOLAR AND ACTIVIST 1911-2007|work=Globe and Mail|author=Sandra Martin|date=April 7, 2007] , Victoria University in the University of Toronto, graduated from the University of Toronto in 1932, and later was a graduate student of John von Neumann at Princeton University, where he finished his doctorate.

He took a faculty position at Queen's University beginning in 1939. Halperin joined the Canadian Army in 1942, serving until 1945 in Ottawa with the Canadian Armament Research and Development Establishment (CARDE). He then returned to Queen's. ["Queen's Alumni Review", A Question of Treason, by Sara Beck, February 2008, p. 16.]

In February 1946, he was arrested and accused of espionage in Canada, in connection with the defection of Igor Gouzenko, a Soviet cipher clerk, which occurred in Ottawa in September 1945. ["Queen's Alumni Review", A Question of Treason, by Sara Beck, February 2008, p. 14-15.] Gouzenko's defection and subsequent investigation showed that the Soviet Union was carrying on large-scale spying in Canada and the United States, including nuclear weapons espionage.

After some arduous questioning and confinement lasting several weeks, under a Royal Commission appointed by Justice Minister Louis St-Laurent, followed by a trial in early 1947, Halperin was eventually cleared and freed. He resumed teaching at Queen's, but not until 1948, following more legal hurdles which were raised by Queen's University leadership. Queen's Principal Robert Charles Wallace advocated his return. ["Queen's Alumni Review": A Question of Treason, by Sara Beck, February 2008, pp. 14-20, 52.]

Halperin was elected a Fellow of the Royal Society of Canada in 1953, and won the Henry Marshall Tory Medal in 1967. ["Queen's Alumni Review", A Question of Treason, by Sara Beck, February 2008, p. 52.]

Following von Neumann's death in 1957, Halperin completed two of his unfinished papers, leaving them under von Neuman's name alone. ["Queen's Alumni Review": A Question of Treason, by Sara Beck, February 2008, p. 16.]

Halperin taught at Queen's until 1966, earning tenure as a full professor. He then moved to the University of Toronto until his retirement in 1976, by which time he had authored more than 100 academic papers. He was awarded an honorary doctorate of laws from Queen's in 1989, and was made a Member of the Order of Canada, both for his humanitarian work. ["Queen's Alumni Review", A Question of Treason, by Sara Beck, February 2008, pp. 20, 52.]

Halperin died in 2007 at age 96.

References

* [http://www.news.utoronto.ca/inthenews/archive/2007_04_07.html University of Toronto: News Digest] , April 7, 2007.
*"Queen's Alumni Review", A Question of Treason, by Sara Beck, February 2008, pp. 14-20, 52.


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