William Henry Young (London, October 20, 1863 - Lausanne, July 7, 1942) was a mathematician educated at University of Cambridge. London ( ˈlʌndən is the capital and largest urban area in the United Kingdom. Events 1740 - Maria Theresa takes the throne of Austria. France, Prussia, Bavaria and Saxony Year 1863 ( MDCCCLXIII) was a Common year starting on Thursday (link will display the full calendar of the Gregorian calendar (or a Common Lausanne ( pronounced, Losanna is a city in Romandy, the French -speaking part of Switzerland, situated on the shores of Lake Geneva Events 1456 - A retrial verdict acquits Joan of Arc of heresy 25 years after her death Year 1942 ( MCMXLII) was a Common year starting on Thursday (the link will display the full 1942 calendar of the Gregorian calendar. The University of Cambridge (often Cambridge University) located in Cambridge, England, is the second-oldest university in the He worked on measure theory, Fourier series, differential calculus amongst other fields, and made brilliant and long-lasting contributions to the study of functions of several complex variables. In Mathematics the concept of a measure generalizes notions such as "length" "area" and "volume" (but not all of its applications have to do with In Mathematics, a Fourier series decomposes a periodic function into a sum of simple oscillating functions Differential Calculus, a field in Mathematics, is the study of how functions change when their inputs change Complex analysis, traditionally known as the theory of functions of a complex variable, is the branch of Mathematics investigating functions of Complex He was the husband of Grace Chisholm Young and father of Laurence Chisholm Young. Grace Chisholm Young ( March 15, 1868 - March 29, 1944) was an English Mathematician. Laurence Chisholm Young ( 14 July 1905 &ndash 24 December 2000) was a Mathematician known for his contributions to Measure theory