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Kenneth Appel
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==Biography== Appel was born in [[Brooklyn, New York]], on October 8, 1932. He grew up in [[Queens, New York]], and was the son of a Jewish<ref name=jinfo>{{cite web |url=http://www.jinfo.org/Mathematics_Comp.html |title=Jewish Mathematicians |website=Jinfo.org |accessdate=29 June 2018}}</ref> couple, Irwin Appel and Lillian Sender Appel. He worked as an [[actuary]] for a brief time and then served in the [[U.S. Army]] for two years at Fort Benning, Georgia, and in [[Baumholder, Germany]]. In 1959, he finished his doctoral program at the [[University of Michigan]], and he also married Carole S. Stein in [[Philadelphia]]. The couple moved to [[Princeton, New Jersey]], where Appel worked for the [[Institute for Defense Analyses]] from 1959 to 1961. His main work at the Institute for Defense Analyses was doing research in [[cryptography]]. Toward the end of his life, in 2012, he was elected a [[Fellow]] of the [[American Mathematical Society]]. He died in [[Dover, New Hampshire]], on April 19, 2013, after being diagnosed with [[esophageal cancer]] in October 2012.<ref name="Obituary">{{Cite web|last=|first=|date=|title=Kenneth Appel Obituary (1932 - 2013) - Dover, NH|url=https://www.legacy.com/us/obituaries/fosters/name/kenneth-appel-obituary?id=20368248|archive-url=https://web.archive.org/web/20240101094706/https://www.legacy.com/us/obituaries/fosters/name/kenneth-appel-obituary?id=20368248|archive-date=2024-01-01|access-date=2024-01-01|website=www.legacy.com}}</ref> Kenneth Appel was also the treasurer of the Strafford County Democratic Committee. He played tennis through his early 50s. He was a lifelong stamp collector, a player of the game of Go and a baker of bread.<ref name="memoriam" /> He and Carole had two sons, [[Andrew W. Appel]], a noted [[computer scientist]], and [[Peter H. Appel]], and a daughter, Laurel F. Appel, who died on March 4, 2013. He was also a member of the Dover school board from 2010 until his death.<ref name="Obituary" />
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