Bot at 09:14, 13 March 2022

2022-03-13T09:14:25Z

← Older revision		Revision as of 14:44, 13 March 2022
Line 1:		Line 1:
			{{Short description\|British-Indian mathematician}}
	{{Use dmy dates\|date=January 2021}}		{{Use dmy dates\|date=January 2021}}
	{{Infobox scientist		{{Infobox scientist
Line 18:		Line 19:
	\| awards =		\| awards =
	}}		}}
	'''Allan Joseph Champneys Cunningham''' (1842–1928) was a British [[mathematician]].<ref>A. E. Western, ''J. London Math. Soc.'' 317–318 (1928)</ref>		'''Allan Joseph Champneys Cunningham''' (1842–1928) was a British-Indian [[mathematician]].<ref>A. E. Western, ''J. London Math. Soc.'' 317–318 (1928)</ref>

	==Biography==		==Biography==

imported>Dawnseeker2000: date format audit, minor formatting, typo(s) fixed: Instructor → instructor

2021-02-01T12:09:23Z

date format audit, minor formatting, typo(s) fixed: Instructor → instructor

New page

{{Use dmy dates|date=January 2021}}
{{Infobox scientist
| name = Allan J. C. Cunningham
| image =
| image_size =
| caption =
| birth_name = Allan Joseph Champneys Cunningham
| birth_date = 1842
| birth_place = [[Delhi]], [[Company rule in India|India]]
| death_date = 1928 (aged 86)
| death_place = [[London]], [[United Kingdom]]
| nationality = British
| fields = [[Number theory]]
| workplaces =
| alma_mater =
| doctoral_advisor =
| known_for = {{ublist|[[Cunningham chain]]|[[Cunningham number]]|[[the Cunningham project]]}}
| awards =
}}
'''Allan Joseph Champneys Cunningham''' (1842–1928) was a British [[mathematician]].<ref>A. E. Western, ''J. London Math. Soc.'' 317–318 (1928)</ref>

==Biography==
Born in [[Delhi]], Cunningham was the son of [[Sir Alexander Cunningham]], archaeologist and the founder of the [[Archaeological Survey of India]].<ref name=dnb>{{cite ODNB|author=Cotton, J. S. & James Lunt (reviser)|chapter=Cunningham, Sir Alexander (1814–1893) |title= Oxford Dictionary of National Biography| year=2004| doi=10.1093/ref:odnb/6916}}</ref> He started a military career with the [[British East India Company|East India Company]]'s [[Bengal Engineer Group|Bengal Engineers]] at a young age. From 1871 to 1881, he was instructor in mathematics at the [[Thomason College of Civil Engineering]]. Upon returning to the [[United Kingdom]] in 1881, he continued teaching at military institutes in [[Chatham, Kent|Chatham]], [[Dublin]] and [[Shorncliffe Army Camp|Shorncliffe]]. He left the army in 1891. He spent the rest of his life studying [[number theory]]. He applied his expertise to finding [[Divisor|factors]] of large numbers of the form ''a<sup>n</sup>'' ± ''b<sup>n</sup>'', such as [[Mersenne numbers]] (<math>2^p-1</math>) and [[Fermat numbers]] (<math>2^{2^n}+1</math>) which have ''b'' = 1. His work is continued in the [[Cunningham project]].

==References==
{{reflist}}

==External links==
*Number Theory Web, [http://www.numbertheory.org/obituaries/LMS/cunningham/ Allan Joseph Champneys Cunningham] (based on the obituary by A.E. Western).

{{Authority control}}

{{DEFAULTSORT:Cunningham, Allan Joseph Champneys}}
[[Category:1842 births]]
[[Category:1928 deaths]]
[[Category:People from Delhi]]
[[Category:19th-century British mathematicians]]
[[Category:20th-century British mathematicians]]
[[Category:Number theorists]]
[[Category:British East India Company Army officers]]

{{UK-mathematician-stub}}

Allan J. C. Cunningham - Revision history

Bot at 09:14, 13 March 2022

imported>Dawnseeker2000: date format audit, minor formatting, typo(s) fixed: Instructor → instructor