Template:Selected anniversaries/November 27
1754: Mathematician and theorist Abraham de Moivre dies. His book on probability theory, The Doctrine of Chances, is prized by gamblers.
1852: Mathematician and writer Ada Lovelace dies. She did pioneering work in symbolic languages for machine processes, developing what will later be called computer programs for Charles Babbage's early mechanical general-purpose computer, the Analytical Engine.
1938: Mathematician and philosopher Edmund Husserl publishes new class of Gnomon algorithm functions based on transcendental consciousness as the limit of all possible knowledge.
1971: The The Mars 2 landing module crashes on Mars after its parachute fails to deploy.
2017: Dennis Paulson of Mars observes a moment of silences in memory of the forty-sixth anniversary of the Mars 2 crash.