Jacob Tamarkin

Jacob David Tamarkin (en ruso: Я́ков Дави́дович Тама́ркин, Yakov Davidovich Tamarkin; 11 de julio 1888 – 18 de noviembre 1945) fue un matemático ruso-estadounidense conocido por sus trabajos en el campo del análisis matemático.

Biografia

Tamarkin nacio en Chernihiv, Imperial Russia (actualmente Chernihiv, Ucrania) en el seno de una rica familia judia. Su padre, David Tamarkin, era medico. Crecio en St Petersburg. Durante su colegio secundario trabo amistad con Alexander Friedmann, un cosmologo, con quien escribe en 1906 su primera publicación en el ámbito de las matemáticas, y de quien permanece como amigo a lo largo de su vida. Vladimir Smirnov fue también un amigo que hizo en el colegio secundario (gymnasium). Muchos años mas tarde escriben juntos un libro de texto muy popular titulado, "Un curso de matemáticas avanzadas".

Tamarkin estudio en la St Petersburg University donde se gradua en 1917, su asesor de tesis es Andrei Markov. Luego de su graduación, Tamarkin trabaja en el Instituto de Comunicaciones de la Universidad de San Petersburgo y en el Instituto de Electrotecnia de la misma universidad. In 1919 he temporarily became a professor and a dean at Perm State University, but a year later returned to St Petersburg where he received a professorship at St Petersburg Polytechnical University.

In 1925 he became worried about Russia's stability and decided to immigrate to the United States. His favorite memory was the examination in analytic geometry he had to do with an American consul in Riga, when he tried to prove his identity.​ In the U.S., he became a lecturer at Dartmouth College. In 1927, Tamarkin received a professorship at Brown University where he remained until his retirement in 1945, after suffering a heart attack. He died later that year in Bethesda, Maryland, a suburb of Washington, D.C.​

Tamarkin's work spanned a number of areas, including number theory, integral equations, Fourier series, complex analysis, moment problem, boundary value problem and differential equations. He was a proponent and a founding co-editor of the Mathematical Reviews (which was based at Brown at that time), together with Otto Neugebauer and William Feller.​ He was also an active supporter of the American Mathematical Society, a member of the council starting 1931, and a vice-president in 1942-43. He had over twenty doctoral students at Brown, including Dorothy Lewis Bernstein, Nelson Dunford, George Forsythe and Derrick Lehmer.

Tamarkin was married to a Helene Weichardt (1888–1934) from a wealthy family of German ancestry. Their son, Paul Tamarkin (1922–1977), was a physicist for RAND Corporation.​

Bibliografia

• Jacob David Tamarkin—His life and work, by Einar Hille, Bull. Amer. Math. Soc. Volume 53, Number 5 (1947), 440-457.
• Tamarkin, Jacob D., an article in Encyclopedia Brunoniana
• Tamarkin's biography (in Russian)

Enlaces externos

• O'Connor, John J.; Robertson, Edmund F., «Jacob Tamarkin» (en inglés), MacTutor History of Mathematics archive, Universidad de Saint Andrews, https://mathshistory.st-andrews.ac.uk/Biographies/Tamarkin/ .
• Jacob Tamarkin en el Mathematics Genealogy Project.
• Tamarkin's mathematical school (in Russian)
• Jacob David Tamarkin, Mathematical Reviews history page (with a photo).

• Datos: Q372097