Template:Selected anniversaries/September 30: Difference between revisions

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||1916: Arthur Harold Stone born ... mathematician born in London, who worked mostly in topology.  he proved the Erdős–Stone theorem with Paul Erdős and is credited with the discovery of the first 2 flexagons, a trihexaflexagon and a hexahexaflexagon. Pic: https://www.cambridge.org/core/journals/bulletin-of-the-london-mathematical-society/article/arthur-harold-stone-19162000/1E575AF918A66A3DEB8F902221CCAFC5
||1916: Arthur Harold Stone born ... mathematician born in London, who worked mostly in topology.  he proved the Erdős–Stone theorem with Paul Erdős and is credited with the discovery of the first 2 flexagons, a trihexaflexagon and a hexahexaflexagon. Pic: https://www.cambridge.org/core/journals/bulletin-of-the-london-mathematical-society/article/arthur-harold-stone-19162000/1E575AF918A66A3DEB8F902221CCAFC5
||1925: Lew Allen, Jr. born ... United States Air Force four-star general and physicist. Allen studied the military effects of high altitude nuclear explosions, later becoming the Director of Space Systems, and subsequently Director of the National Security Agency. Pic.


||1925: Arkady Ostashev born ... engineer and educator. Pic.
||1925: Arkady Ostashev born ... engineer and educator. Pic.

Revision as of 15:37, 5 April 2019