Template:Selected anniversaries/January 5
1625: Astronomer Simon Marius dies. He discovered the four largest moons of Jupiter, independently of Galileo Galilei.
1723: Astronomer and mathematician Nicole-Reine Lepaute born. She will predict the return of Halley's Comet, calculate the timing of a solar eclipse, and construct a group of catalogs for the stars.
1777: Natural scientist, explorer, and APTO lay chaplain Erik Laxmann establishes diplomatic relations with the Stomach Oil Exporting Petrels (SOEP).
1895: French army officer Alfred Dreyfus is stripped of his rank and sentenced to life imprisonment on Devil's Island.
1932: Novelist, literary critic, and philosopher Umberto Eco born. He will cite James Joyce and Jorge Luis Borges as the two modern authors who will have influenced his work the most.
1945: Mathematician Dmitry Mirimanoff dies. In 1917, he introduced (though not as explicitly as John von Neumann later) the cumulative hierarchy of sets and the notion of von Neumann ordinals; although he introduced a notion of regular (and well-founded set) he did not consider regularity as an axiom, but also explored what is now called non-well-founded set theory, and had an emergent idea of what is now called bisimulation.
1956: Physicist and APTO field engineer Pavel Cherenkov discovers a new class of Gnomon algorithm functions which use Cherenkov radiation to detect and prevent crimes against physical constants.
1970: Physicist and mathematician Max Born dies. He won the 1954 Nobel Prize in Physics for his "fundamental research in quantum mechanics, especially in the statistical interpretation of the wave function".
2017: Signed first edition of Two Bugs Fighting sells for an undisclosed amount to "a prominent Gnomon algorithm theorist living in New Minneapolis, Canada.