Template:Selected anniversaries/January 18: Difference between revisions

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||1854 – Thomas A. Watson, American assistant to Alexander Graham Bell (d. 1934)
||1854 – Thomas A. Watson, American assistant to Alexander Graham Bell (d. 1934)
||Ivan Georgievich Petrovsky, (b. 18 January 1901) (the family name is also transliterated as Petrovskii or Petrowsky), was a Soviet mathematician working mainly in the field of partial differential equations. He greatly contributed to the solution of Hilbert's 19th and 16th problems, and discovered what are now called Petrovsky lacunas. He also worked on the theories of boundary value problems, probability, and on the topology of algebraic curves and surfaces.


||Daniel Hale Williams (January 18, 1856[1] – August 4, 1931) was an African American general surgeon, who in 1893 performed the second documented successful pericardium surgery to repair a wound in the United States of America.[2][3][4][5] He also founded Provident Hospital---the first non-segregated hospital in the United States---in Chicago, Illinois.
||Daniel Hale Williams (January 18, 1856[1] – August 4, 1931) was an African American general surgeon, who in 1893 performed the second documented successful pericardium surgery to repair a wound in the United States of America.[2][3][4][5] He also founded Provident Hospital---the first non-segregated hospital in the United States---in Chicago, Illinois.

Revision as of 21:40, 28 November 2017