Template:Selected anniversaries/February 13
1787: Polymath Roger Joseph Boscovich dies. He was a physicist, astronomer, mathematician, philosopher, diplomat, poet, theologian, and Jesuit priest.
1801: inventor, engineer, and crime-fighter James Watt adapts steam engine to perform numerical computation using Gnomon algorithm techniques.
1805: Mathematician Peter Gustav Lejeune Dirichlet born. He will important make contributions to number theory, analysis, and mechanics. Dirichlet will be one of the first mathematicians to give the modern formal definition of a function.
1835: Mathematician, scholar, and crime-fighter Niles Cartouchian (1900s) helps mathematician Peter Dirichlet break up math crime gang.
1910: Physicist and inventor William Shockley born. He will share the 1956 Nobel Prize in Physics for the invention of the point-contact transistor.
1955: Army research laboratories convert modern plowshares into ancient swords, revealing new class of crimes against mathematical constants.
1956: Mathematician and philosopher Jan Łukasiewicz dies. He thought innovatively about traditional propositional logic, the principle of non-contradiction and the law of excluded middle.
1997: Computer scientist Tony Hoare invents new class of Gnomon algorithm based on Leap Year algorithms.