Editing 1873 in science (section)

==Mathematics==
* [[Charles Hermite]] proves that the [[mathematical constant]] ''[[e (mathematical constant)|e]]'' is a [[transcendental number]]<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>
* [[Henri Brocard]] introduces the [[Brocard points]], [[Brocard triangle]] and [[Brocard circle]]<ref name=Crilly/><ref>"Etudes d'un nouveau cercle du plan du triangle". Paper to l'Association française pour l'avancement des sciences.</ref><ref>{{cite journal|first=Laura|last=Guggenbuhl|authorlink= Laura Guggenbühl |title=Henri Brocard and the Geometry of the Triangle|journal=The Mathematical Gazette|location=London|publisher=[[Mathematical Association]]|volume=37|issue=322 |pages=241–243|jstor=3610034 |date=December 1953|doi=10.1017/S0025557200027558}}</ref>