James Mercer FRS (15 January 1883 – 21 February 1932) was a mathematician, born in Bootle, close to Liverpool, England. He was educated at University of Manchester, and then University of Cambridge. He became a Fellow, saw active service at the Battle of Jutland in World War I, and after decades of suffering ill health died in London, England.He proved Mercer's theorem, which states that positive definite kernels can be expressed as a dot product in a highdimensional space.
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 James Mercer, né le 15 janvier 1883 à Bootle (près de Liverpool) et mort le 21 février 1932 à Londres, était un mathématicien anglais.
 James Mercer FRS (15 January 1883 – 21 February 1932) was a mathematician, born in Bootle, close to Liverpool, England. He was educated at University of Manchester, and then University of Cambridge. He became a Fellow, saw active service at the Battle of Jutland in World War I, and after decades of suffering ill health died in London, England.He proved Mercer's theorem, which states that positive definite kernels can be expressed as a dot product in a highdimensional space. This theorem is the basis of the kernel trick (applied by Aizerman), which allows linear algorithms to be easily converted into nonlinear algorithms.
 James Mercer (Bootle, 15 de janeiro de 1883 — 21 de fevereiro de 1932) foi um matemático inglês.

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 British mathematician
 British mathematician

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 James Mercer, né le 15 janvier 1883 à Bootle (près de Liverpool) et mort le 21 février 1932 à Londres, était un mathématicien anglais.
 James Mercer (Bootle, 15 de janeiro de 1883 — 21 de fevereiro de 1932) foi um matemático inglês.
 James Mercer FRS (15 January 1883 – 21 February 1932) was a mathematician, born in Bootle, close to Liverpool, England. He was educated at University of Manchester, and then University of Cambridge. He became a Fellow, saw active service at the Battle of Jutland in World War I, and after decades of suffering ill health died in London, England.He proved Mercer's theorem, which states that positive definite kernels can be expressed as a dot product in a highdimensional space.

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 James Mercer (mathématicien)
 James Mercer
 James Mercer (mathematician)

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 Mercer, James
 James Mercer

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