Arthur Geoffrey Walker: Difference between revisions

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'''Arthur Geoffrey Walker''' (17 July 1909 – 31 March 2001)<ref>{{Cite journal | last1 = Hitchin | first1 = N. J. | doi = 10.1098/rsbm.2006.0028 | title = [[Arthur Geoffrey Walker]]. 17 July 1909 -- 31 March 2001: Elected FRS 1955 | journal = [[Biographical Memoirs of Fellows of the Royal Society]] | volume = 52 | pages = 413–421 | year = 2006 | pmid = | pmc = }}</ref><ref>{{cite web |url=http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Walker_Arthur.html |title=Walker_Arthur summary |work= |accessdate=2011-07-21}}</ref> was a leading [[mathematician]] who made important contributions to [[physics]] and [[physical cosmology]]. He was born in [[Watford]], [[Hertfordshire]], England.
 
Walker was an accomplished [[differential geometry|geometer]], but he is best remembered today for two important contributions to [[general relativity]]. Together with [[Howard Percy Robertson|H. P. Robertson]], the well known [[Robertson–Walker metric]] for the [[Friedmann–Lemaître–Robertson–Walker]] cosmological models, which are [[exact solutions in general relativity|exact solutions]] of the Einstein field equation. Together with [[Enrico Fermi]], he introduced the notion of [[Fermi–Walker differentiation]].