Coalition of the Confused

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Confused malcontents swilling Chardonnay while awaiting the Zombie Apocalypse.

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Mathematics Science

Started 9/25/18 by Di (amina046); 1470 views.

Msg 9 of 17 to Di (amina046)amina046

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Second woman in 50 years wins Nobel prize for economics, sharing honour with her husband

Three US-based economists have won the 2019 Nobel Economics Prize on Monday for their work in fighting poverty that has helped millions of children around the world.

From: Di (amina046)

10/15/19

Msg 11 of 17 to Jenifer (Zarknorph)Zarknorph

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Rainbow Proof Shows Graphs Have Uniform Parts

Mathematicians have proved that copies of smaller graphs can always be used to perfectly cover larger ones.

From: ramseylurker

Feb-20

Msg 13 of 17 to Di (amina046)amina046

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Here's an image that I made a long time ago. The important thing to notice is that there are no monochromatic triangles, that is, the edge colorings are "good". This can be done with 16 vertices (with 3 colors) in exactly two ways (as shown below), up to isomorphism, and cannot be done with 17 or more vertices, so the Classical Ramsey Number R(3,3,3)=17.

Greenwood, Gleason 1955: https://www.cambridge.org/core/journals/canadian-journal-of-mathematics/article/combinatorial-relations-and-chromatic-graphs/BF0DEBC881488344266BCD77CBBCD86B

Edited February 20, 2020 9:11 pm by ramseylurker

Msg 14 of 17 to ramseylurkerramseylurker

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From: Jenifer (Zarknorph)

Mar-1

ABC News

Did you know we don't get leap years every four years?

It's been four years, but February 29 is back and all you leaplings can officially celebrate on your day. But did you know that every fourth year isn't necessarily a leap year?