Chike Obi

==Career as mathematician==
Obi returned to lecture at the premier Nigerian [[University of Ibadan]].<ref>{{Cite web|title=Chike Obi and Fermat's Last Theorem|url=http://www.math.buffalo.edu/mad/PEEPS/obi-chike-fermat.html|website=www.math.buffalo.edu|access-date=2020-05-28}}</ref> He was soon diverted from this by political activities. After the war, he returned to lecture in 1970 at the [[University of Lagos]] where he quickly rose to the senior academic role of a professor.

He left [[Lagos]] to return to his root in the city of [[Onitsha]], establishing the Nanna Institute for Scientific Studies.

Obi had won the Sigvard Eklund Prize for original work in differential equation from the [[International Centre for Theoretical Physics]].<ref>{{Cite web |title=ICTP Prize Winner 1985 |url=https://www.ictp.it/home/ictp-prize-winner-1985 |access-date=2024-03-19 |publisher=[[International Centre for Theoretical Physics]]}}</ref> He was a [[university]] teacher until his retirement as an [[Emeritus]] [[Professor]] in 1985.<ref>{{Cite web|title=OBI, Prof Chike(Late)|url=https://blerf.org/index.php/biography/obi-professor-chike/|last=Udo|first=Mary|date=2018-02-25|website=Biographical Legacy and Research Foundation|language=en-US|access-date=2020-05-28}}</ref>

In 1997, Obi claimed to be the third person to solve [[Fermat’s Last Theorem]] after [[Andrew Wiles]] and [[Richard Taylor (mathematician)|Richard Taylor]] in 1994.<ref name="bbc">{{Cite news|url=http://news.bbc.co.uk/2/hi/africa/413784.stm|title=World: Africa – Africa Media Watch|date=6 August 1999|work=[[BBC News Online]]|publisher=[[BBC]]|accessdate=30 August 2010|location=London, UK}}</ref>
He also claimed to have found an elementary proof to [[Fermat’s Last Theorem]]. This work was carried out at his Nanna Institute for Scientific Studies in [[Onitsha]], [[Eastern Nigeria]] and published in Algebras, Groups and Geometries.<ref>C. Obi, "Fermat's Last Theorem", Algebras, Groups and Geometries, Vol. 15, Special issue No. 3, 1998, p.289-298</ref><ref>{{Cite web|url=http://www.math.buffalo.edu/mad/PEEPS/obi-chike-fermat.html|title=Chike Obi and Fermat's Last Theorem|website=www.math.buffalo.edu|access-date=2017-10-20}}</ref><ref>[http://waado.org/NigerDelta/Memorials/chike_obi_madunagu.html Professor Chike Obi] {{Webarchive|url=https://web.archive.org/web/20190329032559/http://waado.org/NigerDelta/Memorials/chike_obi_madunagu.html |date=2019-03-29 }} The Guardian, March 27, 2008</ref> However, a review of this proof published in [[Mathematical Reviews]] indicates that it was a false proof.<ref>{{Cite web|url=http://www.math.buffalo.edu/mad/PEEPS/obi-chike-fermat-review.html|title=review of Obi's proof of Fermat's Last Theorem|website=www.math.buffalo.edu|access-date=2017-10-20}}</ref><ref>{{Cite web|url=http://www.math.buffalo.edu/mad/PEEPS/obi_chike.html|title=Chike Edozien Umuezei Obi, Mathematician of the African Diaspora|website=www.math.buffalo.edu|access-date=2017-10-20}}</ref>