Laurence Chisholm Young

Laurence Chisholm Young
L. Ch. Young (standing right) at the ICM 1932
Born(1905-07-14)July 14, 1905
DiedDecember 24, 2000(2000-12-24) (aged 95)
Alma materCambridge University
Known forCalculus of variations, real analysis
Awards
Scientific career
Institutions
Doctoral studentsWendell Fleming

Laurence Chisholm Young (14 July 1905 – 24 December 2000) was a British mathematician known for his contributions to measure theory, the calculus of variations, optimal control theory, and potential theory. He was the son of William Henry Young and Grace Chisholm Young, both prominent mathematicians. He moved to the US in 1949 but never sought American citizenship.

The concept of Young measure is named after him: he also introduced the concept of the generalized curve[1] and a concept of generalized surface[2] which later evolved in the concept of varifold.[3][4] The Young integral also is named after him and has now been generalised in the theory of rough paths.[5]

  1. ^ (Young 1937).
  2. ^ (Young 1951).
  3. ^ In his commemorative papers describing the research of Almgren, Brian White (1997, p.1452, footnote 1, 1998, p.682, footnote 1) writes that these are "essentially the same class of surfaces". He notes also that Young himself used the same term in a somewhat different context i.e. in (L. C. Young 1942, 1942a).
  4. ^ See also the 2015 unpublished essay of his pupil Wendell Fleming.
  5. ^ (Young 1936).