Template:Selected anniversaries/March 30: Difference between revisions
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||1867 – Alaska is purchased from Russia for $7.2 million, about 2-cent/acre ($4.19/km²), by United States Secretary of State William H. Seward. | ||1867 – Alaska is purchased from Russia for $7.2 million, about 2-cent/acre ($4.19/km²), by United States Secretary of State William H. Seward. | ||
File:Stanisław Leśniewski.jpg|link=Stanisław Leśniewski (nonfiction)|1886: Mathematician, philosopher, and logician [[Stanisław Leśniewski (nonfiction)|Stanisław Leśniewski]] born. He will posit three nested formal systems, to which he will give the Greek-derived names of protothetic, ontology, and mereology. | |||
||1888 – J. R. Williams, Canadian-born cartoonist (d. 1957) | ||1888 – J. R. Williams, Canadian-born cartoonist (d. 1957) | ||
Revision as of 13:04, 15 November 2017
1599: Mathematician Adam Ries dies. He wrote textbooks for practical mathematics, promoting the advantages of Arabic/Indian numerals over Roman numerals.
1886: Mathematician, philosopher, and logician Stanisław Leśniewski born. He will posit three nested formal systems, to which he will give the Greek-derived names of protothetic, ontology, and mereology.
1892: Mathematician and academic Stefan Banach born. He will be one of the founders of modern functional analysis.
1939: Hellscreiber teleprinter system used to publish new biography of mathematician Adam Ries.
1942: Der Reichsspritzenmeister develops new memory-wiping drug for Abomynous.
2015: Asclepius Myrmidon discovers unregistered halting problem, predicts new class of crimes against mathematical constants.