{{short description|Swiss American mathematician (1907–1990)}} {{Use mdy dates|date=October 2024}} {{Infobox scientist | name = Edgar Lorch | image = <!--(as myimage.jpg, no 'File:')--> | alt = | caption = | birth_date = {{Birth date|1907|07|22|mf=y}} | birth_place = Nyon, Switzerland | death_date = {{Death date and age|1990|03|05|1907|07|22|mf=y}} | death_place = Manhattan, New York, U.S. | fields = Mathematics | workplaces = Columbia University | alma_mater = Columbia University | doctoral_advisor = Joseph Ritt | doctoral_students = Hing Tong<br />Al Goodman<br />Edward Blum<br />Fritz Steinhardt<br />Leonard Gillman<br />Alan Hoffman<br />Fred Linton<br />Barnett Glickfield<br />Daniel Kocan, Jr.<br />Phyllis Strauss<br />Paul Meyer<br />Julian Hennefeld<br />Paul Fuhrmann<br />Ralph Gellar<br />David Hsieh<br />Eric Braude<br />John Jayne<br />Kevin Broughan<br />Thomas Lupo | thesis_title = Elementary Transformations | thesis_year = 1933 | known_for = | awards = }}
'''Edgar Raymond Lorch''' (July 22, 1907 – March 5, 1990) was a Swiss American mathematician. Described by ''The New York Times'' as "a leader in the development of modern mathematics theory",<ref>{{Cite web|url=https://www.nytimes.com/1990/03/07/obituaries/edgar-r-lorch-82-a-leader-in-building-mathematics-theory.html|title=Edgar R. Lorch, 82, A Leader in Building Mathematics Theory|work=The New York Times |date=March 7, 1990|via=NYTimes.com |last1=Narvaez |first1=Alfonso A. }}</ref> he was a professor of mathematics at Columbia University. He contributed to the fields general topology, especially metrizable and Baire spaces, group theory of permutation groups and functional analysis, especially spectral theory, convexity in Hilbert spaces and normed rings.
== Biography == Born in Switzerland, Lorch emigrated with his family to the United States in 1917 and became a citizen in 1932. He joined the faculty of Columbia University in 1935 and retired in 1976, although he continued to write and lecture as professor emeritus. For his reminiscences of Szeged, Lorch posthumously received in 1994 the Lester R. Ford Award, with Reuben Hersh as editor.<ref>{{cite journal|last=Lorch | first=Edgar R.|editor-last=Hersh| editor-first=Reuben|title=Szeged in 1934|journal=Amer. Math. Monthly|volume=100|issue=3|year=1993|pages=219–230|url=http://www.maa.org/programs/maa-awards/writing-awards/szeged-in-1934|doi=10.2307/2324453|jstor=2324453|url-access=subscription}}</ref>
== References == {{Reflist}}
== External links == *{{MathGenealogy|id=13270}}
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{{DEFAULTSORT:Lorch, Edgar}} Category:1907 births Category:1990 deaths Category:Swiss emigrants to the United States Category:20th-century American mathematicians Category:Columbia University faculty Category:Columbia College, Columbia University alumni
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