Abraham Wald  

A young Wald


Born  October 31, 1902 ClujNapoca, Austria–Hungary 
Died  December 13, 1950 (aged 48) Travancore, India 
Nationality  Hungarian 
Ethnicity  Jewish 
Fields  Mathematics Statistics Economics 
Institutions  Columbia University Cowles Commission for Research in Economics 
Alma mater  University of Vienna 
Doctoral advisor  Karl Menger 
Doctoral students  Meyer Girshick Charles Stein Milton Sobel 
Known for  Wald's equation Wald test Wald's decision theory Sequential analysis Sequential probability ratio test 
Influences  Oskar Morgenstern John von Neumann Harold Hotelling Milton Friedman Jerzy Neyman 
Influenced  Aryeh Dvoretzky Jacob Wolfowitz 
Abraham Wald (October 31, 1902mathematician born in Cluj, in the then Austria–Hungary (presentday Romania) who contributed to decision theory, geometry, and econometrics, and founded the field of statistical sequential analysis.^{[1]}
 December 13, 1950) was a
Contents 
Being a religious Jew, he could not attend school on Saturdays, as was required at the time by the Hungarian school system, and was thus homeschooled by his parents until college.^{[1]} His parents were quite knowledgeable and competent as teachers.^{[2]}
In 1927, he entered graduate school at the University of Vienna, from which he graduated in 1931 with a Ph.D. in mathematics. His advisor there was Karl Menger.^{[1]}
Despite Wald's brilliance, he could not obtain a university position, because of Austrian discrimination against Jews. However, Oskar Morgenstern created a position for Wald in economics. When the Nazis invaded Austria in 1938, the discrimination against Jews intensified. In particular, Wald and his family were persecuted as Jews. Wald was able to emigrate to the United States, at the invitation of the Cowles Commission for Research in Economics, to work on econometrics research.^{[1]}
Wald and his wife died in an airplane crash in the Nilgiri mountains, in southern India, while on an extensive lecture tour at the invitation of the Indian government.^{[1]}
Following his death, Wald was attacked by Sir Ronald A. Fisher FRS; Fisher attacked Wald for being a mathematician without scientific experience who had written an incompetent book on statistics, particularly with regard to the design of experiments.^{[3]} Wald's work was defended by Jerzy Neyman in the following year. Neyman explained Wald's work, particularly with respect to the design of experiments, and diagnosed a fallacy of "fiducial inference", which was a theory proposed by Fisher.^{[4]}
For a complete list, see "The Publications of Abraham Wald". Annals of Mathematical Statistics 23 (1): 29–33. 1952. doi:10.1214/aoms/1177729483.
