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1890 in science
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==Mathematics== * [[Philippa Fawcett]] is placed above the [[Senior Wrangler (University of Cambridge)|Senior Wrangler]] in the [[Cambridge Mathematical Tripos|Mathematical Tripos]] at the [[University of Cambridge]] in England. * [[Percy John Heawood|P. J. Heawood]] proves the [[five colour theorem]].<ref name=Crilly>{{cite book|first=Tony|last=Crilly|title=50 Mathematical Ideas you really need to know|location=London|publisher=Quercus|year=2007|isbn=978-1-84724-008-8}}</ref> * [[Giuseppe Peano]] is the first to demonstrate a [[space-filling curve]].<ref name=Crilly/>
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