Template:Selected anniversaries/April 20: Difference between revisions

Revision as of 20:27, 14 April 2018

1548: Mathematician, astronomer, and alleged time-traveller Petrus Apianus publishes Cosmographicus furatis, his magisterial treatise on crimes against astronomical constants.
1653: Oliver Cromwell dissolves the Rump Parliament.
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.

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 ||1535 – The sun dog phenomenon observed over Stockholm and depicted in the famous painting Vädersolstavlan.
+File:Petrus Apianus.jpg|link=Petrus Apianus (nonfiction)|1548: Mathematician, astronomer, and alleged time-traveller [[Petrus Apianus (nonfiction)|Petrus Apianus]] publishes ''Cosmographicus furatis'', his magisterial treatise on [[crimes against astronomical constants]].
 ||1650 – William Bedloe, English spy born.
 File:Oliver Cromwell by Samuel Cooper.jpg|link=Oliver Cromwell (nonfiction)|1653: [[Oliver Cromwell (nonfiction)|Oliver Cromwell]] dissolves the Rump Parliament.
-File:Niels Steensen.png|link=Niels Steensen (nonfiction)|1654: Mathematician [[Niels Steensen (nonfiction)|Niels Steensen]] publishes new class of [[Gnomon algorithm functions]] which detect and prevent [[crimes against mathematical constants]].
 ||1745 – Philippe Pinel, French physician and psychiatrist (d. 1826)