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Dr. Marion Gray (26 March 1902 – 16 September 1979) was a Scottish mathematician who discovered a graph with 54 vertices and 81 edges while working at American Telephone & Telegraph.〔 〕 The graph is commonly known as the Gray graph. ==Early life and education== Marion Gray was born in Ayr, Scotland on 26 March 1902 to Marion (née Cameron) and James Gray. She attended Ayr Grammar School (1907–1913) and Ayr Academy (1913–1919). In 1919 she entered the University of Edinburgh where she graduated in 1922 with a first class honours in mathematics and natural philosophy. She continued on at the University for a further two years as a post doctoral student in mathematics where she was supervised by E.T. Whittaker. She joined the Edinburgh Mathematical Society where she presented several of her papers including 'The equation of telegraphy' and 'The equation of conduction of heat'. She was elected to the Committee of the Society in November 1923 and continued as a member throughout her career.〔http://www-history.mcs.st-and.ac.uk/Biographies/Gray_Marion.html〕 In 1924 she travelled to the United States under the assistance of both a British graduates scholarship and a Carnegie scholarship to attend Bryn Mawr College, Pennsylvania from where she gained a PhD under the supervision of Anna Johnson Pell Wheeler.〔http://www.genealogy.math.ndsu.nodak.edu/id.php?id=5890〕 Her research topic was 'A boundary value problem of ordinary self-adjoint differential equations with singularities'.〔Pioneering Women in American Mathematics: The Pre-1940 PhD by Judy Green, Jeanne LaDuke. Page 186〕 After receiving her doctorate Gray returned to Edinburgh to take a post of university assistant in natural philosophy at the University of Edinburgh. She held the post for one year before going to London where she was an assistant in mathematics at Imperial College for three years. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Marion Cameron Gray」の詳細全文を読む スポンサード リンク
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