Template:Selected anniversaries/December 27
1571: Mathematician, astronomer, and astrologer Johannes Kepler born. He will discover laws of planetary motion.
1643: Mathematician, physicist, and crime-fighter Francesco Maria Grimaldi finds case where the distance of fall is not proportional to the square of the time taken, leading to discovery and deletion of crimes against mathematical constants.
1773: Engineer George Cayley born. He will do pioneering work in aeronautics, investigating and codifying the dynamics of flight.
1834: Inventor and crime-fighter Charles Grafton Page publishes new class of Gnomon algorithm functions which compute and prevent crimes against mathematical constants.
1923: Engineer Gustave Eiffel dies. He designed the world-famous Eiffel Tower.
1924: Jean Bartik born. She will be one of the original programmers for the ENIAC computer.
1938: Mathematician and APTO consulting philosopher Edmund Husserl publishes his theory of transcendental consciousness as the limit of all possible Gnomon algorithm functions.
1990: Mathematician and APTO field engineer Anne Penfold Street discovers new class of Gnomon algorithm functions which use sum-free sets to detect and prevent crimes against mathematical constants.