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Line 10: \|spouse = Phyllis Ashcroft Freeman (m. 1939) }} Prof '''Arthur Geoffrey Walker''' [[Royal Society of London\|FRS]] [[FRSE]] (17 July 1909 in [[Watford]], [[Hertfordshire]], England – 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 \| doi-access = ~~free~~ }}</ref><ref name="MacTutor">{{cite web \|first1=J.J. \|last1=O'Connor \|first2=E.F. \|last2=Robertson \|author-link2=Edmund F. Robertson \|url=https://mathshistory.st-andrews.ac.uk/Biographies/Walker_Arthur/ \|title=Arthur Geoffrey Walker \|work=[[MacTutor History of Mathematics archive\|MacTutor]] \|date=October 2003 \|access-date=2021-10-10}}</ref> was a British [[mathematician]] who made important contributions to [[physics]] and [[physical cosmology]]. Although he was an accomplished [[differential geometry\|geometer]], he is best remembered today for two important contributions to [[general relativity]]. Together with [[Howard Percy Robertson\|H. P. Robertson]], they devised the well-known [[Robertson–Walker metric\|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]].

Arthur Geoffrey Walker: Difference between revisions