William Henry Young FRS (

London London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...

, 20 October 1863 –

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, 7 July 1942) was an English

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematica ...

. Young was educated at

City of London School The City of London School, also known as CLS and City, is a Private schools in the United Kingdom, private day school for Single-sex education, boys in the City of London, England, on the banks of the River Thames next to the Millennium Bridge, ...

and Peterhouse, Cambridge. He worked on

measure theory In mathematics, the concept of a measure is a generalization and formalization of geometrical measures (length, area, volume) and other common notions, such as magnitude (mathematics), magnitude, mass, and probability of events. These seemingl ...

Fourier series A Fourier series () is an Series expansion, expansion of a periodic function into a sum of trigonometric functions. The Fourier series is an example of a trigonometric series. By expressing a function as a sum of sines and cosines, many problems ...

differential calculus In mathematics, differential calculus is a subfield of calculus that studies the rates at which quantities change. It is one of the two traditional divisions of calculus, the other being integral calculus—the study of the area beneath a curve. ...

, amongst other fields, and made contributions to the study of functions of several complex variables. He was the husband of Grace Chisholm Young, with whom he authored and co-authored 214 papers and 4 books. Two of their children became professional mathematicians ( Laurence Chisholm Young, Cecilia Rosalind Tanner). Young's Theorem was named after him. In 1913 he was the first to be appointed to the newly created chair of Hardinge Professorship of Pure Mathematics in Calcutta University which he held from 1913 to 1917. He also held the part-time Professorship of Philosophy and the History of Mathematics at the

University of Liverpool The University of Liverpool (abbreviated UOL) is a Public university, public research university in Liverpool, England. Founded in 1881 as University College Liverpool, Victoria University (United Kingdom), Victoria University, it received Ro ...

from 1913 to 1919. He was elected a Fellow of the

Royal Society The Royal Society, formally The Royal Society of London for Improving Natural Knowledge, is a learned society and the United Kingdom's national academy of sciences. The society fulfils a number of roles: promoting science and its benefits, re ...

on 2 May 1907. He served as the president of the

London Mathematical Society The London Mathematical Society (LMS) is one of the United Kingdom's Learned society, learned societies for mathematics (the others being the Royal Statistical Society (RSS), the Institute of Mathematics and its Applications (IMA), the Edinburgh ...

from 1922 to 1924. In 1917 he was awarded the De Morgan Medal of

and in 1928 the Sylvester Medal of the Royal Society. He served as the president of the International Mathematical Union from 1929 to 1936.

Works

* 1905: (with Grace Chisholm Young) ''The First Book of Geometry'', J. M. Dent * 1906: (with Grace Chisholm Young)
The Theory of Sets of Points
via Internet Archive * 1910
Fundamental Theorems of the Differential Calculus
via

Internet Archive The Internet Archive is an American 501(c)(3) organization, non-profit organization founded in 1996 by Brewster Kahle that runs a digital library website, archive.org. It provides free access to collections of digitized media including web ...

References

External links

University of Liverpool: Papers of Professor William Henry Young and Grace Chisholm Young
{{DEFAULTSORT:Young, William Henry 19th-century English mathematicians 20th-century English mathematicians Alumni of Peterhouse, Cambridge Fellows of the Royal Society 1863 births 1942 deaths De Morgan Medallists Academic staff of the University of Calcutta British textbook writers