# Orrin Frink

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{{Short description|American mathematician (1901–1988)}}
{{Infobox scientist
| name              = Orrin Frink Jr.
| image             =
| caption           = 
| birth_date        = {{birth date|1901|5|31}}
| birth_place       = [Brooklyn](/source/Brooklyn), [New York](/source/New_York_(state))
| death_date        = {{death date and age|1988|3|4|1901|5|31}}
| death_place       = [Kennebunkport, Maine](/source/Kennebunkport%2C_Maine)
| field             = [Mathematics](/source/Mathematics)
| work_institution  = [Pennsylvania State University](/source/Pennsylvania_State_University)
| alma_mater        = [Columbia University](/source/Columbia_University)
| doctoral_advisor  = 
| doctoral_students = 
| known_for         = [Frink ideal](/source/Frink_ideal) <br /> [Frink's Ratio Test](/source/Ratio_test)
| prizes            = 
| religion          = 
| footnotes         =  
}}
'''Orrin Frink Jr.''' (31 May 1901 – 4 March 1988)<ref name="nyt">{{citation|url=https://www.nytimes.com/1988/03/17/obituaries/orrin-frink-mathematician-86.html|title=Orrin Frink, Mathematician, 86|newspaper=[New York Times](/source/New_York_Times)|date=March 17, 1988}}.</ref> was an American mathematician who introduced [Frink ideal](/source/Frink_ideal)s in 1954.

Frink earned a doctorate from [Columbia University](/source/Columbia_University) in 1926 or 1927<ref name="nyt"/><ref>{{MathGenealogy|id=24622}}</ref> and worked on the faculty of [Pennsylvania State University](/source/Pennsylvania_State_University) for 41 years, 11 of them as department chair.<ref name="nyt"/> His time at Penn State was interrupted by service as assistant chief engineer at the Special Projects Laboratory at [Wright-Patterson Air Force Base](/source/Wright-Patterson_Air_Force_Base) during [World War II](/source/World_War_II), and by two Fulbright fellowships to [Dublin](/source/Dublin), Ireland in the 1960s.<ref name="pw"/>

[Aline Huke Frink](/source/Aline_Huke_Frink), his wife, was also a mathematician at Penn State.<ref name="pw">{{citation|url=https://www.ams.org/publications/authors/books/postpub/hmath-34-PioneeringWomen.pdf|title=Supplementary Material For Pioneering Women In American Mathematics: The Pre-1940 PhD's|publisher=[American Mathematical Society](/source/American_Mathematical_Society)|date=April 17, 2009| first1 = Judy | last1 = Green | author1-link = Judy Green (mathematician) | first2 = Jeanne | last2 = LaDuke | author2-link = Jeanne LaDuke}}</ref> Their eldest son, also named Orrin Frink, became a professor of [Slavic languages](/source/Slavic_languages) at [Ohio University](/source/Ohio_University) and [Iowa State University](/source/Iowa_State_University). Their other children are Peter Hill Frink (1939–2021), who was an architect specializing in theaters and assembly places, John Allen Frink (b.1941), who was a senior consultant in IT for the DuPont Company, and Elizabeth Frink Boyer (b.1945), who was an art teacher and textile designer. 

==Selected publications==
*{{cite journal|author=Frink, Orrin|title=Ideals in partially ordered sets|journal=[American Mathematical Monthly](/source/American_Mathematical_Monthly)|volume=61|year=1954|issue=4|pages=223–234|mr=61575|doi=10.2307/2306387|jstor=2306387}}
*{{Cite journal
| issn = 0003-486X
| volume = 34
| issue = 3
| series = 2
| pages = 518–526
| last = Frink
| first = Orrin
| title = Jordan measure and Riemann integration
| journal = The Annals of Mathematics| date = July 1933
| doi = 10.2307/1968175
| jstor = 1968175
}}
*{{citation
| doi = 10.2307/1967699
| issn = 0003-486X
| volume = 27
| issue = 4
| pages = 491–493
| last = Frink
| first = Orrin
| title = A proof of Petersen's theorem
| journal = [Annals of Mathematics](/source/Annals_of_Mathematics)
| series = Second Series
| year = 1926
| jstor = 1967699
}}<!--| accessdate = 2011-->

==See also==
*[Petersen's theorem](/source/Petersen's_theorem)

==References==
{{Reflist}}

==Further reading==
*''Who Was Who in America: with World Notables'' ({{ISBN|0837902177}}), by Marquis Who's Who, Inc., Volume 9, 1989.

==External links==
*{{Find a Grave|92115752}}

{{Authority control}}

{{DEFAULTSORT:Frink Jr., Orrin}}
Category:1901 births
Category:1988 deaths
Category:20th-century American mathematicians
Category:Columbia University alumni
Category:Pennsylvania State University faculty
Category:Scientists from New York City
Category:People from Kennebunkport, Maine
Category:Mathematicians from New York (state)

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Adapted from the Wikipedia article [Orrin Frink](https://en.wikipedia.org/wiki/Orrin_Frink) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Orrin_Frink?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.