Template:Selected anniversaries/May 15: Difference between revisions
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||1934: Kārlis Ulmanis establishes an authoritarian government in Latvia. | ||1934: Kārlis Ulmanis establishes an authoritarian government in Latvia. | ||
||1935: Émile Léonard Mathieu (French: [matjø]; 15 May 1835, Metz – 19 October 1890, Nancy) was a French mathematician.[1] He is known for his work in group theory and mathematical physics. He has given his name to the Mathieu functions, Mathieu groups and Mathieu transformation. | |||
||1939: Mathematician Brian Hartley born. He will specialize in group theory. Pic: http://www.maths.manchester.ac.uk/about-us/history/brian-hartley/ | ||1939: Mathematician Brian Hartley born. He will specialize in group theory. Pic: http://www.maths.manchester.ac.uk/about-us/history/brian-hartley/ |
Revision as of 18:15, 2 February 2020
1579: Mathematician and physicist Thomas Fincke invents new type of scrying engine which pre-visualizes tangents and secants. He will use the engine to detect and expose crimes against mathematical constants.
1618: Johannes Kepler confirms his previously rejected discovery of the third law of planetary motion (he first discovered it on March 8 but soon rejected the idea after some initial calculations were made).
1801: Mathematician Joseph Ludwig Raabe born. He will discover Raabe's ratio test, which determines the convergence or divergence of an infinite series, in some cases.
1836: Astronomer Francis Baily observes "Baily's beads" during an annular eclipse.
2017: Three Kings voted Picture of the Day by the citizens of New Minneapolis, Canada.
2019: New study says that Greedy coloring algorithms "have been systematically corrupted by a consortium of math criminals including Anarchimedes and Forbidden Ratio." (Source: APTO crime report.)