William Henry Young

William Henry Young ( born October 20, 1863 in London, † July 7, 1942 in Lausanne, Switzerland ) was an English mathematician.

Young studied at the University of Cambridge. Young was married to the mathematician Grace Chisholm Young, with whom he also worked closely. They met in Cambridge know and together they went several years on the continent, first to Göttingen, a year after Italy, then in 1899 again in Göttingen and in 1908 in Geneva. Young visited it regularly Cambridge, where he was examiner ( Examiner ). He was also auditor of several other UK universities such as the University of London. He was a part-time from 1913 to 1917 professor of mathematics at the Calcutta University, where he taught in the winter, and from 1913 to 1919 professor of philosophy and history of mathematics at the University of Liverpool ( where he taught during his time as a professor in India in the summer ). 1919 to 1923 he was a professor at the University College of Wales, Aberystwyth. The family lived from 1915 in Lausanne. In 1924 he gave a plenary lecture at the International Congress of Mathematicians in Toronto ( Some Characteristic Features of Twentieth Century Pure Mathematical Research) and 1928 on the Bologna ( The Mathematical Method and Its Limitations ). In the 1930s, he attended universities worldwide, including in South America 1936 /37. At the beginning of the Second World War he was in Lausanne, there had to endure separated from his family and died there before the end of the war.

It dealt with the theory of real functions and Fourier series and was independent, but two years later as a variant of Henri Lebesgue Lebesgue integral. According to him, among other things, the Young's inequality and named after him and Felix Hausdorff Hausdorff -Young inequality.

With Grace Chisholm Young, he had two sons and three daughters.

1907 Young was admitted as a member ( "Fellow" ) to the Royal Society, in 1928, the Sylvester Medal awarded him. 1922 to 1924 he was President of the London Mathematical Society, the De Morgan Medal he received in 1917. 1929 to 1936 he was president of the International Mathematical Union, which he tried in vain to save from the resulting mainly from the attitude of France national disputes. He was honorary doctorates from the universities of Calcutta, Geneva, Strasbourg.

Writings

• The fundamental theorems of the differential calculus, 1910
• Grace Chisholm Young: The first book of geometry, 1905 ( a geometry book for children)
• Grace Chisholm Young: The theory of sets of points, 1906