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'''Are You Sure ... (October 3, 2020)'''
{{Daily Image/October 3}}{{Preface/October 3}}


{{Are_You_Sure/October 3}}
== Better Than News ==


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{{Better Than News/October 3}}


[[File:Are You Sure (3 Oct 2020).png|thumb|left|Screenshot: Are You Sure (October 3, 2020)]]
== Beyond Plausible ==


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{{Beyond Plausible/October 3}}


'''On This Day in History and Fiction'''
== In Other Words ==


{{Selected anniversaries/October 3}}
{{In Other Words/October 3}}
 
== Are You Sure ==
 
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== Selected Anniversaries ==
 
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== Topic of the Day ==
 
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Latest revision as of 04:10, 28 September 2024


Better Than News

Beyond Plausible

In Other Words

Are You Sure

A Caley graph encodes the abstract structure of a group using a specified, usually finite, set of generators for the group.

This Cayley graph shows the free group on two generators a and b.

• ... 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 astrophysicist 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, Christy publicly refused to shake Teller's hand?

Selected Anniversaries

Topic of the Day

Non-Fungible Tokens