Template:Selected anniversaries/May 15: Difference between revisions
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||1993: Camillo Herbert Grötzsch dies ... mathematician. He was born in Döbeln and died in Halle. Grötzsch worked in graph theory. He was the discoverer and eponym of the Grötzsch graph, a triangle-free graph that requires four colors in any graph coloring, and Grötzsch's theorem, the result that every triangle-free planar graph requires at most three colors. | ||1993: Camillo Herbert Grötzsch dies ... mathematician. He was born in Döbeln and died in Halle. Grötzsch worked in graph theory. He was the discoverer and eponym of the Grötzsch graph, a triangle-free graph that requires four colors in any graph coloring, and Grötzsch's theorem, the result that every triangle-free planar graph requires at most three colors. | ||
File:Greedy colorings.svg|link=Greedy coloring (nonfiction)|2018: News study suggests that [[Greedy coloring (nonfiction)|Greedy coloring]] algorithms "have been systematically corrupted by a consortium of [[math criminals]] including [[Anarchimedes]], [[Forbidden Ratio]], and parties as yet uncounted and unidentified." | |||
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Revision as of 11:07, 3 September 2018
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.
1864: Asclepius Myrmidon Prepares for Emergency Field Surgery incorporated into army medical manuals on both sides of the American Civil War.
1888: Council of algorithms announces plans to fund and build a Museum of Algorithms.
2018: News study suggests that Greedy coloring algorithms "have been systematically corrupted by a consortium of math criminals including Anarchimedes, Forbidden Ratio, and parties as yet uncounted and unidentified."