Template:Selected anniversaries/April 20: Difference between revisions
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||1745 – Philippe Pinel, French physician and psychiatrist (d. 1826) | ||1745 – Philippe Pinel, French physician and psychiatrist (d. 1826) | ||
File:Johann Friedrich Pfaff.jpg|link=Johann Friedrich Pfaff (nonfiction)|1808: Mathematician and crime-fighter [[Johann Friedrich Pfaff (nonfiction)|Johann Friedrich Pfaff]] publishes new theory of differential forms which quickly finds application in the detection and prevention of [[crimes against mathematical constants]]. | |||
||James David Forbes FRS FRSE FGS (b. 20 April 1809) was a Scottish physicist and glaciologist who worked extensively on the conduction of heat and seismology. He invented the seismometer. | ||James David Forbes FRS FRSE FGS (b. 20 April 1809) was a Scottish physicist and glaciologist who worked extensively on the conduction of heat and seismology. He invented the seismometer. |
Revision as of 13:04, 22 November 2017
1653: Oliver Cromwell dissolves the Rump Parliament.
1654: Mathematician Niels Steensen publishes new class of Gnomon algorithm functions which detect and prevent crimes against mathematical constants.
1808: Mathematician and crime-fighter Johann Friedrich Pfaff publishes new theory of differential forms which quickly finds application in the detection and prevention of crimes against mathematical constants.
1932: Mathematician Giuseppe Peano dies. He did pioneering work in mathematical logic and set theory.
1932: New class of crimes against mathematical constants exploits death of mathematician Giuseppe Peano.
1961: Failure of the Bay of Pigs Invasion of US-backed Cuban exiles against Cuba.