Are You Sure (October 3): Difference between revisions
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[[File:Cayley graph of F2.svg|link=Arthur Cayley (nonfiction)|175px|thumb|A '''[[Arthur Cayley (nonfiction)|Caley graph]]''' encodes the abstract structure of a group using a specified, usually finite, set of generators for the group.<br>This Cayley graph shows the free group on two generators ''a'' and ''b''.]] | [[File:Cayley graph of F2.svg|link=Arthur Cayley (nonfiction)|175px|thumb|A '''[[Arthur Cayley (nonfiction)|Caley graph]]''' encodes the abstract structure of a group using a specified, usually finite, set of generators for the group.<br>This Cayley graph shows the free group on two generators ''a'' and ''b''.]] | ||
<span style="font-weight:bold">Are You Sure ... </span> | |||
• ... that mathematician '''[[Arthur Cayley (nonfiction)|Arthur Cayley]]''' (16 August 1821 – 26 January 1895) was the first to define the concept of a group in the modern way (as a set with a binary operation satisfying certain laws); and that formerly, when mathematicians spoke of "groups", they had meant permutation groups? | • ... that mathematician '''[[Arthur Cayley (nonfiction)|Arthur Cayley]]''' (16 August 1821 – 26 January 1895) was the first to define the concept of a group in the modern way (as a set with a binary operation satisfying certain laws); and that formerly, when mathematicians spoke of "groups", they had meant permutation groups? | ||
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• ... that physicist and astrophyisicist '''[[Robert F. Christy (nonfiction)|Robert F. Christy]]''' was distraught at the outcome of the 1954 [[Oppenheimer security hearing (nonfiction)|Oppenheimer security hearing]]; and that when Christy encountered [[Edward Teller (nonfiction)|Edward Teller]], who had testified against Oppenheimer, at Los Alamos in 1954, Christy publicly refused to shake Teller's hand? | • ... that physicist and astrophyisicist '''[[Robert F. Christy (nonfiction)|Robert F. Christy]]''' was distraught at the outcome of the 1954 [[Oppenheimer security hearing (nonfiction)|Oppenheimer security hearing]]; and that when Christy encountered [[Edward Teller (nonfiction)|Edward Teller]], who had testified against Oppenheimer, at Los Alamos in 1954, Christy publicly refused to shake Teller's hand? | ||
<div style="padding-top:15px;padding-bottom:15px;float:right;color:#333">—October 3, 2020</div> | |||
<div style="clear:both;letter-spacing:.4rem;float:right;color:#555555">gnomonchronicles.com</div> | |||
Revision as of 03:13, 4 October 2020
This Cayley graph shows the free group on two generators a and b.
Are You Sure ...
• ... that mathematician Arthur Cayley (16 August 1821 – 26 January 1895) was the first to define the concept of a group in the modern way (as a set with a binary operation satisfying certain laws); and that formerly, when mathematicians spoke of "groups", they had meant permutation groups?
• ... that mathematician Reginald Robin Farquharson (3 October 1930 – 1 April 1973) worked on game theory because he was interested in both mathematics and politics; and that Farquharson's doctoral thesis, which analyzed voting systems, was influential when later published as Theory of Voting (Oxford: Blackwell, 1970)?
• ... that 2001: A Species Odyssey is a short documentary film about the ethical dilemma faced by two astronauts (Frank Bowman and David Poole) when they discover an alien-human hybrid child stowed away on their spaceship?
• ... that physicist and astrophyisicist Robert F. Christy was distraught at the outcome of the 1954 Oppenheimer security hearing; and that when Christy encountered Edward Teller, who had testified against Oppenheimer, at Los Alamos in 1954, Christy publicly refused to shake Teller's hand?