Harold Seymour Shapiro (2 April 1928 – 5 March 2021) was a professor of mathematics at the Royal Institute of Technology in Stockholm, Sweden, best known for inventing the so-called Shapiro polynomials (also known as Golay–Shapiro polynomials or Rudin–Shapiro polynomials) and for work on quadrature domains. His main research areas were approximation theory, complex analysis, functional analysis, and partial differential equations. He was also interested in the pedagogy of problem-solving. Born and raised in Brooklyn, New York, Shapiro earned a B.Sc. from the City College of New York in 1949 and earned his M.S. degree from the Massachusetts Institute of Technology in 1951. He received his Ph.D. in 1952 from MIT; his thesis was written under the supervision of Norman Levinson. He was the father of cosmologist Max Tegmark, a graduate of the Royal Institute of Technology and now a professor at MIT. Shapiro died on 5 March 2021, aged 92. See also Rudin–Shapiro sequence List_of_Jewish_mathematicians#S References External links Shapiro's homepage Rudin–Shapiro Curve by Eric Rowland, The Wolfram Demonstrations Project. 1928 births 2021 deaths 20th-century American mathematicians 21st-century American mathematicians American Jews Academic staff of the KTH Royal Institute of Technology Massachusetts Institute of Technology alumni Mathematical analysts Functional analysts Approximation theorists American emigrants to Sweden