The four color problem gets a sharp new hue
Geplaatst op 07 maart 2009 - 14:45
Mathematicians find new answers to the still puzzling theorem that four colors suffice to color any map.
In 1852, botanist Francis Guthrie noticed something peculiar as he was coloring a map of counties in England. Despite the counties’ meandering shapes and varied configurations, four colors were all he needed to shade the map so that any two bordering counties were different colors. Perhaps, he speculated, four colors were enough for any map.
"Invisible Pink Unicorns are beings of great spiritual power. We know this because they are capable of being invisible and pink at the same time. Like all religions, the Faith of the Invisible Pink Unicorns is based upon both logic and faith. We have faith that they are pink; we logically know that they are invisible because we can't see them."
0 gebruiker(s) lezen dit onderwerp
0 leden, 0 bezoekers, 0 anonieme gebruikers
- Hier ook uw vacature? 06-14
- Composiet maken 23-11
- parallel schakeling van weers... 23-11 2
- Kaartspel vraagstuk 23-11 7
- Now you has jazz 23-11 2
- Gu14 12v naar 230v 23-11 4
- Bril aanmeten 23-11 1
- De uitspraak van neither 23-11 7
- Cloud Chamber/Nevelkamer 22-11 1
- [Redox] Hoe weet ik welke hal... 22-11 1
- Doorbuiging door een horizont... 22-11 9