Mathematician:William Henry Young

Mathematician

English mathematician, who worked on measure theory, Fourier series, differential calculus amongst other fields.

Made brilliant and long-lasting contributions to the study of functions of several complex variables.

Nationality

English

History

• Born: 20 Oct 1863, London, England
• 1896: Married Grace Emily Chisholm
• Died: 7 July 1942, Lausanne, Switzerland

Theorems and Definitions

• Young's Inequality for Products
• Reverse Young's Inequality for Products
• Young's Inequality for Convolutions
• Young's Inequality for Increasing Functions
• Hausdorff-Young Inequality (with Felix Hausdorff)

Results named for William Henry Young can be found here.

Publications

• 1905: The First Book of Geometry (with Grace Chisholm Young)
• 1906: The Theory of Sets of Points (with Grace Chisholm Young)
• 1910: The Fundamental Theorems of the Differential Calculus
• 1913: On the Fourier Series of Bounded Functions (Proc. London Math. Soc. Ser. 2 Vol. 12: pp. 41 – 70)
• 1913: On the Determination of the Summability of a Function by Means of its Fourier Constants (Proc. London Math. Soc. Ser. 2 Vol. 12: pp. 71 – 88)

Sources

• John J. O'Connor and Edmund F. Robertson: "William Henry Young": MacTutor History of Mathematics archive

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): Young's inequality
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): Young's inequality