Template:Selected anniversaries/March 13

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  1764: Charles Grey, 2nd Earl Grey born. His government will see the abolition of slavery in the British Empire.

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  1877: Children reprogram Jacquard loom to compute new family of Gnomon algorithm functions.

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  1911: Mathematician Melvin Dresher (Dreszer) born. Dresher will contribute to game theory, co-developing the game theoretical model of cooperation and conflict known as the Prisoner's dilemma.

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  1969: Physicist, computer scientist, and APTO field engineer Howard H. Aiken publishes new class of Gnomon algorithm functions which compute and prevent crimes against mathematical constants.

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  2013: Tractor voted Picture of the Day by the citizens of New Minneapolis, Canada.

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  2016: Philosopher, mathematician, and computer scientist Hilary Putnam dies. Putnam argued for the reality of mathematical entities, later espousing the view that mathematics is not purely logical, but "quasi-empirical".