Template:Selected anniversaries/October 21: Difference between revisions
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||1877 – Oswald Avery, Canadian-American physician and microbiologist (d. 1955) | ||1877 – Oswald Avery, Canadian-American physician and microbiologist (d. 1955) | ||
||Heinrich Eduard Heine (October 21 1881) was a German mathematician. Heine became known for results on special functions and in real analysis. In particular, he authored an important treatise on spherical harmonics and Legendre functions (''Handbuch der Kugelfunctionen''). He also investigated basic hypergeometric series. He introduced the Mehler–Heine formula. | |||
||1911 – Mary Blair, American illustrator and animator (d. 1978) | ||1911 – Mary Blair, American illustrator and animator (d. 1978) | ||
Revision as of 18:22, 4 November 2017
1914: Mathematics and science writer Martin Gardner born. His interests will include stage magic, scientific skepticism, philosophy, religion, and literature.
1958: National Pareidolia Day declared in the United States.
1969: Mathematician and academic Wacław Sierpiński dies. He made important contributions to set theory (research on the axiom of choice and the continuum hypothesis), number theory, theory of functions, and topology.
2017: Green Spiral 9 feels more green than ever, according to new chromatographic analysis.