{{Short description|Dutch mathematician (c. 1630–1691)}}

thumb|''Labyrinthus algebrae'' (1667)

'''Johan Jacob Ferguson''' was a 17th-century Dutch mathematician who corresponded with Gottfried Wilhelm Leibniz.<ref name="Maanen">{{Cite journal|author=Jan A. van Maanen|title=Korrespondenten von G. W. Leibniz: 11. Johan Ferguson geb. um 1630 in Haag(?), gest. vor dem 24. November 1706, vermutlich am 6. Oktober 1691 in Amsterdem|journal=Studia Leibnitiana|volume=22|issue=2|year=1990|pages=203–216|jstor=40694153|language=de}}</ref>

== Life == He was born around 1630, probably in The Hague, and died before 24 November 1706, probably on 6 October 1691 in Amsterdam.<ref name="Maanen" />

In his 1667 book ''Labyrinthus algebrae'', written in low Dutch,<ref name="Rees1819">{{cite book|author=Abraham Rees|title=The Cyclopaedia; Or, Universal Dictionary of Arts, Sciences and Literature|volume=1|chapter-url=https://books.google.com/books?id=bD9RAAAAcAAJ&pg=PP674|year=1819|location=London|publisher=Longman, Hurst|page=674|chapter=Algebra}}</ref> he shows the solutions of cubic and biquadratic equations using new methods.<ref name="Rigaud1841">{{cite book|editor=Stephen Jordan Rigaud|editor-link=Stephen Rigaud|title=Correspondence of Scientific Men of the Seventeenth Century|volume=2|url=https://books.google.com/books?id=sQ9UAAAAcAAJ&pg=PA515|year=1841|location=Oxford|publisher=The University Press|pages=515–|isbn=9780598562197}}</ref> The book had a partial translation in Latin (lost) and was sent to Isaac Newton.<ref>{{cite book|title=Giornale di fisica|volume=31|url=https://books.google.com/books?id=12ZCAQAAIAAJ|year=1990|location=Bologna|publisher=Società italiana di fisica|language=it|page=115}}</ref><ref name="TarozziVloten1989">{{cite book|author1=G. Tarozzi|author2=Monique van Vloten|title=Radici, significato, retaggio dell'opera newtoniana|url=https://books.google.com/books?id=L024AAAAIAAJ|year=1989|location=Bologna|publisher=Società italiana di fisica|language=it|page=371}}</ref>

== Works == * {{Cite book|title=Labyrinthus algebrae|location='s-Gravenhage|publisher=Johannes Rammazeyn|date=1667|url=https://gutenberg.beic.it/webclient/DeliveryManager?pid=883583|language=nl}}

==References== {{reflist}}

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{{DEFAULTSORT:Ferguson, Johan Jacob}} Category:1630s births Category:1691 deaths Category:17th-century Dutch mathematicians Category:Scientists from The Hague