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In page Grace Chisholm Young:

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Although most of their work was published jointly, it is believed that Grace did much of the actual writing, and she also produced independent work which, according to expert opinion, was deeper and more important than her husband's.[2] In total, they published 214 papers and four books.[1] She began to publish in her own name in 1914, and was awarded the Gamble Prize for Mathematics by Girton College for an essay On infinite derivates in 1915.[1] This work was stimulated by developments in microscopy that allowed real molecular motion to be viewed. Her work between 1914 and 1916 on relationships between derivatives of an arbitrary function contributed to the Denjoy-Young-Saks theorem.[citation needed]